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## javax.swing
Class JTable

    java.lang.Object
      java.awt.Component
          java.awt.Container
              javax.swing.JComponent
                  javax.swing.JTable

All Implemented Interfaces:
  ImageObserver, MenuContainer, Serializable, EventListener, Accessible, CellEditorListener, ListSelectionListener, TableColumnModelListener, TableModelListener, Scrollable

    public class JTable

extends JComponent
implements TableModelListener, Scrollable, TableColumnModelListener, ListSelectionListener, CellEditorListener, Accessible

The `JTable` is used to display and edit regular two-dimensional tables of cells. See How to Use Tables in The Java Tutorial for task-oriented documentation and examples of using `JTable`.

The `JTable` has many facilities that make it possible to customize its rendering and editing but provides defaults for these features so that simple tables can be set up easily. For example, to set up a table with 10 rows and 10 columns of numbers:

          TableModel dataModel = new AbstractTableModel() {
              public int getColumnCount() { return 10; }
              public int getRowCount() { return 10;}
              public Object getValueAt(int row, int col) { return new Integer(row*col); }
          };
          JTable table = new JTable(dataModel);
          JScrollPane scrollpane = new JScrollPane(table);

Note that if you wish to use a `JTable` in a standalone view (outside of a `JScrollPane`) and want the header displayed, you can get it using `getTableHeader()` and display it separately.

When designing applications that use the `JTable` it is worth paying close attention to the data structures that will represent the table's data. The `DefaultTableModel` is a model implementation that uses a `Vector` of `Vector`s of `Object`s to store the cell values. As well as copying the data from an application into the `DefaultTableModel`, it is also possible to wrap the data in the methods of the `TableModel` interface so that the data can be passed to the `JTable` directly, as in the example above. This often results in more efficient applications because the model is free to choose the internal representation that best suits the data. A good rule of thumb for deciding whether to use the `AbstractTableModel` or the `DefaultTableModel` is to use the `AbstractTableModel` as the base class for creating subclasses and the `DefaultTableModel` when subclassing is not required.

The "TableExample" directory in the demo area of the source distribution gives a number of complete examples of `JTable` usage, covering how the `JTable` can be used to provide an editable view of data taken from a database and how to modify the columns in the display to use specialized renderers and editors.

The `JTable` uses integers exclusively to refer to both the rows and the columns of the model that it displays. The `JTable` simply takes a tabular range of cells and uses `getValueAt(int, int)` to retrieve the values from the model during painting.

By default, columns may be rearranged in the `JTable` so that the view's columns appear in a different order to the columns in the model. This does not affect the implementation of the model at all: when the columns are reordered, the `JTable` maintains the new order of the columns internally and converts its column indices before querying the model.

So, when writing a `TableModel`, it is not necessary to listen for column reordering events as the model will be queried in its own coordinate system regardless of what is happening in the view. In the examples area there is a demonstration of a sorting algorithm making use of exactly this technique to interpose yet another coordinate system where the order of the rows is changed, rather than the order of the columns.

J2SE 5 adds methods to `JTable` to provide convenient access to some common printing needs. Simple new `print()` methods allow for quick and easy addition of printing support to your application. In addition, a new `getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)` method is available for more advanced printing needs.

As for all `JComponent` classes, you can use `InputMap` and `ActionMap` to associate an `Action` object with a `KeyStroke` and execute the action under specified conditions.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeansTM has been added to the `java.beans` package. Please see `XMLEncoder`.

Nested Class Summary
`protected class` | `JTable.AccessibleJTable` This class implements accessibility support for the `JTable` class.
`static class` | `JTable.PrintMode` Printing modes, used in printing `JTable`s.

Nested classes/interfaces inherited from class javax.swing.JComponent
`JComponent.AccessibleJComponent`

Nested classes/interfaces inherited from class java.awt.Container
`Container.AccessibleAWTContainer`

Nested classes/interfaces inherited from class java.awt.Component
`Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy`

Field Summary
`static int` | `AUTO_RESIZE_ALL_COLUMNS` During all resize operations, proportionately resize all columns.
`static int` | `AUTO_RESIZE_LAST_COLUMN` During all resize operations, apply adjustments to the last column only.
`static int` | `AUTO_RESIZE_NEXT_COLUMN` When a column is adjusted in the UI, adjust the next column the opposite way.
`static int` | `AUTO_RESIZE_OFF` Do not adjust column widths automatically; use a scrollbar.
`static int` | `AUTO_RESIZE_SUBSEQUENT_COLUMNS` During UI adjustment, change subsequent columns to preserve the total width; this is the default behavior.
`protected boolean` | `autoCreateColumnsFromModel` The table will query the `TableModel` to build the default set of columns if this is true.
`protected int` | `autoResizeMode` Determines if the table automatically resizes the width of the table's columns to take up the entire width of the table, and how it does the resizing.
`protected TableCellEditor` | `cellEditor` The object that overwrites the screen real estate occupied by the current cell and allows the user to change its contents.
`protected boolean` | `cellSelectionEnabled` Obsolete as of Java 2 platform v1.3.
`protected TableColumnModel` | `columnModel` The `TableColumnModel` of the table.
`protected TableModel` | `dataModel` The `TableModel` of the table.
`protected Hashtable` | `defaultEditorsByColumnClass` A table of objects that display and edit the contents of a cell, indexed by class as declared in `getColumnClass` in the `TableModel` interface.
`protected Hashtable` | `defaultRenderersByColumnClass` A table of objects that display the contents of a cell, indexed by class as declared in `getColumnClass` in the `TableModel` interface.
`protected int` | `editingColumn` Identifies the column of the cell being edited.
`protected int` | `editingRow` Identifies the row of the cell being edited.
`protected Component` | `editorComp` If editing, the `Component` that is handling the editing.
`protected Color` | `gridColor` The color of the grid.
`protected Dimension` | `preferredViewportSize` Used by the `Scrollable` interface to determine the initial visible area.
`protected int` | `rowHeight` The height in pixels of each row in the table.
`protected int` | `rowMargin` The height in pixels of the margin between the cells in each row.
`protected boolean` | `rowSelectionAllowed` True if row selection is allowed in this table.
`protected Color` | `selectionBackground` The background color of selected cells.
`protected Color` | `selectionForeground` The foreground color of selected cells.
`protected ListSelectionModel` | `selectionModel` The `ListSelectionModel` of the table, used to keep track of row selections.
`protected boolean` | `showHorizontalLines` The table draws horizontal lines between cells if `showHorizontalLines` is true.
`protected boolean` | `showVerticalLines` The table draws vertical lines between cells if `showVerticalLines` is true.
`protected JTableHeader` | `tableHeader` The `TableHeader` working with the table.

Fields inherited from class javax.swing.JComponent
`accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW`

Fields inherited from class java.awt.Component
`BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT`

Fields inherited from interface java.awt.image.ImageObserver
`ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH`

Constructor Summary
`JTable()` Constructs a default `JTable` that is initialized with a default data model, a default column model, and a default selection model.
`JTable(int numRows, int numColumns)` Constructs a `JTable` with `numRows` and `numColumns` of empty cells using `DefaultTableModel`.
`JTable(Object[][] rowData, Object[] columnNames)` Constructs a `JTable` to display the values in the two dimensional array, `rowData`, with column names, `columnNames`.
`JTable(TableModel dm)` Constructs a `JTable` that is initialized with `dm` as the data model, a default column model, and a default selection model.
`JTable(TableModel dm, TableColumnModel cm)` Constructs a `JTable` that is initialized with `dm` as the data model, `cm` as the column model, and a default selection model.
`JTable(TableModel dm, TableColumnModel cm, ListSelectionModel sm)` Constructs a `JTable` that is initialized with `dm` as the data model, `cm` as the column model, and `sm` as the selection model.
`JTable(Vector rowData, Vector columnNames)` Constructs a `JTable` to display the values in the `Vector` of `Vectors`, `rowData`, with column names, `columnNames`.

Method Summary
`void` | `addColumn(TableColumn aColumn)` Appends `aColumn` to the end of the array of columns held by this `JTable`'s column model.
`void` | `addColumnSelectionInterval(int index0, int index1)` Adds the columns from `index0` to `index1`, inclusive, to the current selection.
`void` | `addNotify()` Calls the `configureEnclosingScrollPane` method.
`void` | `addRowSelectionInterval(int index0, int index1)` Adds the rows from `index0` to `index1`, inclusive, to the current selection.
`void` | `changeSelection(int rowIndex, int columnIndex, boolean toggle, boolean extend)` Updates the selection models of the table, depending on the state of the two flags: `toggle` and `extend`.
`void` | `clearSelection()` Deselects all selected columns and rows.
`void` | `columnAdded(TableColumnModelEvent e)` Invoked when a column is added to the table column model.
`int` | `columnAtPoint(Point point)` Returns the index of the column that `point` lies in, or -1 if the result is not in the range [0, `getColumnCount()`-1].
`void` | `columnMarginChanged(ChangeEvent e)` Invoked when a column is moved due to a margin change.
`void` | `columnMoved(TableColumnModelEvent e)` Invoked when a column is repositioned.
`void` | `columnRemoved(TableColumnModelEvent e)` Invoked when a column is removed from the table column model.
`void` | `columnSelectionChanged(ListSelectionEvent e)` Invoked when the selection model of the `TableColumnModel` is changed.
`protected void` | `configureEnclosingScrollPane()` If this `JTable` is the `viewportView` of an enclosing `JScrollPane` (the usual situation), configure this `ScrollPane` by, amongst other things, installing the table's `tableHeader` as the `columnHeaderView` of the scroll pane.
`int` | `convertColumnIndexToModel(int viewColumnIndex)` Maps the index of the column in the view at `viewColumnIndex` to the index of the column in the table model.
`int` | `convertColumnIndexToView(int modelColumnIndex)` Maps the index of the column in the table model at `modelColumnIndex` to the index of the column in the view.
`protected TableColumnModel` | `createDefaultColumnModel()` Returns the default column model object, which is a `DefaultTableColumnModel`.
`void` | `createDefaultColumnsFromModel()` Creates default columns for the table from the data model using the `getColumnCount` method defined in the `TableModel` interface.
`protected TableModel` | `createDefaultDataModel()` Returns the default table model object, which is a `DefaultTableModel`.
`protected void` | `createDefaultEditors()` Creates default cell editors for objects, numbers, and boolean values.
`protected void` | `createDefaultRenderers()` Creates default cell renderers for objects, numbers, doubles, dates, booleans, and icons.
`protected ListSelectionModel` | `createDefaultSelectionModel()` Returns the default selection model object, which is a `DefaultListSelectionModel`.
`protected JTableHeader` | `createDefaultTableHeader()` Returns the default table header object, which is a `JTableHeader`.
`static JScrollPane` | `createScrollPaneForTable(JTable aTable)` Deprecated. As of Swing version 1.0.2, replaced by `new JScrollPane(aTable)`.
`void` | `doLayout()` Causes this table to lay out its rows and columns.
`boolean` | `editCellAt(int row, int column)` Programmatically starts editing the cell at `row` and `column`, if those indices are in the valid range, and the cell at those indices is editable.
`boolean` | `editCellAt(int row, int column, EventObject e)` Programmatically starts editing the cell at `row` and `column`, if those indices are in the valid range, and the cell at those indices is editable.
`void` | `editingCanceled(ChangeEvent e)` Invoked when editing is canceled.
`void` | `editingStopped(ChangeEvent e)` Invoked when editing is finished.
`AccessibleContext` | `getAccessibleContext()` Gets the AccessibleContext associated with this JTable.
`boolean` | `getAutoCreateColumnsFromModel()` Determines whether the table will create default columns from the model.
`int` | `getAutoResizeMode()` Returns the auto resize mode of the table.
`TableCellEditor` | `getCellEditor()` Returns the cell editor.
`TableCellEditor` | `getCellEditor(int row, int column)` Returns an appropriate editor for the cell specified by `row` and `column`.
`Rectangle` | `getCellRect(int row, int column, boolean includeSpacing)` Returns a rectangle for the cell that lies at the intersection of `row` and `column`.
`TableCellRenderer` | `getCellRenderer(int row, int column)` Returns an appropriate renderer for the cell specified by this row and column.
`boolean` | `getCellSelectionEnabled()` Returns true if both row and column selection models are enabled.
`TableColumn` | `getColumn(Object identifier)` Returns the `TableColumn` object for the column in the table whose identifier is equal to `identifier`, when compared using `equals`.
`Class<?>` | `getColumnClass(int column)` Returns the type of the column appearing in the view at column position `column`.
`int` | `getColumnCount()` Returns the number of columns in the column model.
`TableColumnModel` | `getColumnModel()` Returns the `TableColumnModel` that contains all column information of this table.
`String` | `getColumnName(int column)` Returns the name of the column appearing in the view at column position `column`.
`boolean` | `getColumnSelectionAllowed()` Returns true if columns can be selected.
`TableCellEditor` | `getDefaultEditor(Class<?> columnClass)` Returns the editor to be used when no editor has been set in a `TableColumn`.
`TableCellRenderer` | `getDefaultRenderer(Class<?> columnClass)` Returns the cell renderer to be used when no renderer has been set in a `TableColumn`.
`boolean` | `getDragEnabled()` Gets the value of the `dragEnabled` property.
`int` | `getEditingColumn()` Returns the index of the column that contains the cell currently being edited.
`int` | `getEditingRow()` Returns the index of the row that contains the cell currently being edited.
`Component` | `getEditorComponent()` Returns the component that is handling the editing session.
`Color` | `getGridColor()` Returns the color used to draw grid lines.
`Dimension` | `getIntercellSpacing()` Returns the horizontal and vertical space between cells.
`TableModel` | `getModel()` Returns the `TableModel` that provides the data displayed by this `JTable`.
`Dimension` | `getPreferredScrollableViewportSize()` Returns the preferred size of the viewport for this table.
`Printable` | `getPrintable(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat)` Return a `Printable` for use in printing this JTable.
`int` | `getRowCount()` Returns the number of rows in this table's model.
`int` | `getRowHeight()` Returns the height of a table row, in pixels.
`int` | `getRowHeight(int row)` Returns the height, in pixels, of the cells in `row`.
`int` | `getRowMargin()` Gets the amount of empty space, in pixels, between cells.
`boolean` | `getRowSelectionAllowed()` Returns true if rows can be selected.
`int` | `getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction)` Returns `visibleRect.height` or `visibleRect.width`, depending on this table's orientation.
`boolean` | `getScrollableTracksViewportHeight()` Returns false to indicate that the height of the viewport does not determine the height of the table.
`boolean` | `getScrollableTracksViewportWidth()` Returns false if `autoResizeMode` is set to `AUTO_RESIZE_OFF`, which indicates that the width of the viewport does not determine the width of the table.
`int` | `getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction)` Returns the scroll increment (in pixels) that completely exposes one new row or column (depending on the orientation).
`int` | `getSelectedColumn()` Returns the index of the first selected column, -1 if no column is selected.
`int` | `getSelectedColumnCount()` Returns the number of selected columns.
`int[]` | `getSelectedColumns()` Returns the indices of all selected columns.
`int` | `getSelectedRow()` Returns the index of the first selected row, -1 if no row is selected.
`int` | `getSelectedRowCount()` Returns the number of selected rows.
`int[]` | `getSelectedRows()` Returns the indices of all selected rows.
`Color` | `getSelectionBackground()` Returns the background color for selected cells.
`Color` | `getSelectionForeground()` Returns the foreground color for selected cells.
`ListSelectionModel` | `getSelectionModel()` Returns the `ListSelectionModel` that is used to maintain row selection state.
`boolean` | `getShowHorizontalLines()` Returns true if the table draws horizontal lines between cells, false if it doesn't.
`boolean` | `getShowVerticalLines()` Returns true if the table draws vertical lines between cells, false if it doesn't.
`boolean` | `getSurrendersFocusOnKeystroke()` Returns true if the editor should get the focus when keystrokes cause the editor to be activated
`JTableHeader` | `getTableHeader()` Returns the `tableHeader` used by this `JTable`.
`String` | `getToolTipText(MouseEvent event)` Overrides `JComponent`'s `getToolTipText` method in order to allow the renderer's tips to be used if it has text set.
`TableUI` | `getUI()` Returns the L&F object that renders this component.
`String` | `getUIClassID()` Returns the suffix used to construct the name of the L&F class used to render this component.
`Object` | `getValueAt(int row, int column)` Returns the cell value at `row` and `column`.
`protected void` | `initializeLocalVars()` Initializes table properties to their default values.
`boolean` | `isCellEditable(int row, int column)` Returns true if the cell at `row` and `column` is editable.
`boolean` | `isCellSelected(int row, int column)` Returns true if the specified indices are in the valid range of rows and columns and the cell at the specified position is selected.
`boolean` | `isColumnSelected(int column)` Returns true if the specified index is in the valid range of columns, and the column at that index is selected.
`boolean` | `isEditing()` Returns true if a cell is being edited.
`boolean` | `isRowSelected(int row)` Returns true if the specified index is in the valid range of rows, and the row at that index is selected.
`void` | `moveColumn(int column, int targetColumn)` Moves the column `column` to the position currently occupied by the column `targetColumn` in the view.
`protected String` | `paramString()` Returns a string representation of this table.
`Component` | `prepareEditor(TableCellEditor editor, int row, int column)` Prepares the editor by querying the data model for the value and selection state of the cell at `row`, `column`.
`Component` | `prepareRenderer(TableCellRenderer renderer, int row, int column)` Prepares the renderer by querying the data model for the value and selection state of the cell at `row`, `column`.
`boolean` | `print()` A convenience method that displays a printing dialog, and then prints this `JTable` in mode `PrintMode.FIT_WIDTH`, with no header or footer text.
`boolean` | `print(JTable.PrintMode printMode)` A convenience method that displays a printing dialog, and then prints this `JTable` in the given printing mode, with no header or footer text.
`boolean` | `print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat)` A convenience method that displays a printing dialog, and then prints this `JTable` in the given printing mode, with the specified header and footer text.
`boolean` | `print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat, boolean showPrintDialog, PrintRequestAttributeSet attr, boolean interactive)` Print this `JTable`.
`protected boolean` | `processKeyBinding(KeyStroke ks, KeyEvent e, int condition, boolean pressed)` Invoked to process the key bindings for `ks` as the result of the `KeyEvent` `e`.
`void` | `removeColumn(TableColumn aColumn)` Removes `aColumn` from this `JTable`'s array of columns.
`void` | `removeColumnSelectionInterval(int index0, int index1)` Deselects the columns from `index0` to `index1`, inclusive.
`void` | `removeEditor()` Discards the editor object and frees the real estate it used for cell rendering.
`void` | `removeNotify()` Calls the `unconfigureEnclosingScrollPane` method.
`void` | `removeRowSelectionInterval(int index0, int index1)` Deselects the rows from `index0` to `index1`, inclusive.
`protected void` | `resizeAndRepaint()` Equivalent to `revalidate` followed by `repaint`.
`int` | `rowAtPoint(Point point)` Returns the index of the row that `point` lies in, or -1 if the result is not in the range [0, `getRowCount()`-1].
`void` | `selectAll()` Selects all rows, columns, and cells in the table.
`void` | `setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel)` Sets this table's `autoCreateColumnsFromModel` flag.
`void` | `setAutoResizeMode(int mode)` Sets the table's auto resize mode when the table is resized.
`void` | `setCellEditor(TableCellEditor anEditor)` Sets the `cellEditor` variable.
`void` | `setCellSelectionEnabled(boolean cellSelectionEnabled)` Sets whether this table allows both a column selection and a row selection to exist simultaneously.
`void` | `setColumnModel(TableColumnModel columnModel)` Sets the column model for this table to `newModel` and registers for listener notifications from the new column model.
`void` | `setColumnSelectionAllowed(boolean columnSelectionAllowed)` Sets whether the columns in this model can be selected.
`void` | `setColumnSelectionInterval(int index0, int index1)` Selects the columns from `index0` to `index1`, inclusive.
`void` | `setDefaultEditor(Class<?> columnClass, TableCellEditor editor)` Sets a default cell editor to be used if no editor has been set in a `TableColumn`.
`void` | `setDefaultRenderer(Class<?> columnClass, TableCellRenderer renderer)` Sets a default cell renderer to be used if no renderer has been set in a `TableColumn`.
`void` | `setDragEnabled(boolean b)` Sets the `dragEnabled` property, which must be `true` to enable automatic drag handling (the first part of drag and drop) on this component.
`void` | `setEditingColumn(int aColumn)` Sets the `editingColumn` variable.
`void` | `setEditingRow(int aRow)` Sets the `editingRow` variable.
`void` | `setGridColor(Color gridColor)` Sets the color used to draw grid lines to `gridColor` and redisplays.
`void` | `setIntercellSpacing(Dimension intercellSpacing)` Sets the `rowMargin` and the `columnMargin` -- the height and width of the space between cells -- to `intercellSpacing`.
`void` | `setModel(TableModel dataModel)` Sets the data model for this table to `newModel` and registers with it for listener notifications from the new data model.
`void` | `setPreferredScrollableViewportSize(Dimension size)` Sets the preferred size of the viewport for this table.
`void` | `setRowHeight(int rowHeight)` Sets the height, in pixels, of all cells to `rowHeight`, revalidates, and repaints.
`void` | `setRowHeight(int row, int rowHeight)` Sets the height for `row` to `rowHeight`, revalidates, and repaints.
`void` | `setRowMargin(int rowMargin)` Sets the amount of empty space between cells in adjacent rows.
`void` | `setRowSelectionAllowed(boolean rowSelectionAllowed)` Sets whether the rows in this model can be selected.
`void` | `setRowSelectionInterval(int index0, int index1)` Selects the rows from `index0` to `index1`, inclusive.
`void` | `setSelectionBackground(Color selectionBackground)` Sets the background color for selected cells.
`void` | `setSelectionForeground(Color selectionForeground)` Sets the foreground color for selected cells.
`void` | `setSelectionMode(int selectionMode)` Sets the table's selection mode to allow only single selections, a single contiguous interval, or multiple intervals.
`void` | `setSelectionModel(ListSelectionModel newModel)` Sets the row selection model for this table to `newModel` and registers for listener notifications from the new selection model.
`void` | `setShowGrid(boolean showGrid)` Sets whether the table draws grid lines around cells.
`void` | `setShowHorizontalLines(boolean showHorizontalLines)` Sets whether the table draws horizontal lines between cells.
`void` | `setShowVerticalLines(boolean showVerticalLines)` Sets whether the table draws vertical lines between cells.
`void` | `setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke)` Sets whether editors in this JTable get the keyboard focus when an editor is activated as a result of the JTable forwarding keyboard events for a cell.
`void` | `setTableHeader(JTableHeader tableHeader)` Sets the `tableHeader` working with this `JTable` to `newHeader`.
`void` | `setUI(TableUI ui)` Sets the L&F object that renders this component and repaints.
`void` | `setValueAt(Object aValue, int row, int column)` Sets the value for the cell in the table model at `row` and `column`.
`void` | `sizeColumnsToFit(boolean lastColumnOnly)` Deprecated. As of Swing version 1.0.3, replaced by `doLayout()`.
`void` | `sizeColumnsToFit(int resizingColumn)` Obsolete as of Java 2 platform v1.4.
`void` | `tableChanged(TableModelEvent e)` Invoked when this table's `TableModel` generates a `TableModelEvent`.
`protected void` | `unconfigureEnclosingScrollPane()` Reverses the effect of `configureEnclosingScrollPane` by replacing the `columnHeaderView` of the enclosing scroll pane with `null`.
`void` | `updateUI()` Notification from the `UIManager` that the L&F has changed.
`void` | `valueChanged(ListSelectionEvent e)` Invoked when the row selection changes -- repaints to show the new selection.

Methods inherited from class javax.swing.JComponent
`addAncestorListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update`

Methods inherited from class java.awt.Container
`add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree`

Methods inherited from class java.awt.Component
`action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### AUTO_RESIZE_OFF

    public static final int AUTO_RESIZE_OFF

  Do not adjust column widths automatically; use a scrollbar.

  See Also:
    Constant Field Values

### AUTO_RESIZE_NEXT_COLUMN

    public static final int AUTO_RESIZE_NEXT_COLUMN

  When a column is adjusted in the UI, adjust the next column the opposite way.

  See Also:
    Constant Field Values

### AUTO_RESIZE_SUBSEQUENT_COLUMNS

    public static final int AUTO_RESIZE_SUBSEQUENT_COLUMNS

  During UI adjustment, change subsequent columns to preserve the total width; this is the default behavior.

  See Also:
    Constant Field Values

### AUTO_RESIZE_LAST_COLUMN

    public static final int AUTO_RESIZE_LAST_COLUMN

  During all resize operations, apply adjustments to the last column only.

  See Also:
    Constant Field Values

### AUTO_RESIZE_ALL_COLUMNS

    public static final int AUTO_RESIZE_ALL_COLUMNS

  During all resize operations, proportionately resize all columns.

  See Also:
    Constant Field Values

### dataModel

    protected TableModel dataModel

  The `TableModel` of the table.

### columnModel

    protected TableColumnModel columnModel

  The `TableColumnModel` of the table.

### selectionModel

    protected ListSelectionModel selectionModel

  The `ListSelectionModel` of the table, used to keep track of row selections.

### tableHeader

    protected JTableHeader tableHeader

  The `TableHeader` working with the table.

### rowHeight

    protected int rowHeight

  The height in pixels of each row in the table.

### rowMargin

    protected int rowMargin

  The height in pixels of the margin between the cells in each row.

### gridColor

    protected Color gridColor

  The color of the grid.

### showHorizontalLines

    protected boolean showHorizontalLines

  The table draws horizontal lines between cells if `showHorizontalLines` is true.

### showVerticalLines

    protected boolean showVerticalLines

  The table draws vertical lines between cells if `showVerticalLines` is true.

### autoResizeMode

    protected int autoResizeMode

  Determines if the table automatically resizes the width of the table's columns to take up the entire width of the table, and how it does the resizing.

### autoCreateColumnsFromModel

    protected boolean autoCreateColumnsFromModel

  The table will query the `TableModel` to build the default set of columns if this is true.

### preferredViewportSize

    protected Dimension preferredViewportSize

  Used by the `Scrollable` interface to determine the initial visible area.

### rowSelectionAllowed

    protected boolean rowSelectionAllowed

  True if row selection is allowed in this table.

### cellSelectionEnabled

    protected boolean cellSelectionEnabled

  Obsolete as of Java 2 platform v1.3. Please use the `rowSelectionAllowed` property and the `columnSelectionAllowed` property of the `columnModel` instead. Or use the method `getCellSelectionEnabled`.

### editorComp

    protected transient Component editorComp

  If editing, the `Component` that is handling the editing.

### cellEditor

    protected transient TableCellEditor cellEditor

  The object that overwrites the screen real estate occupied by the current cell and allows the user to change its contents.

### editingColumn

    protected transient int editingColumn

  Identifies the column of the cell being edited.

### editingRow

    protected transient int editingRow

  Identifies the row of the cell being edited.

### defaultRenderersByColumnClass

    protected transient Hashtable defaultRenderersByColumnClass

  A table of objects that display the contents of a cell, indexed by class as declared in `getColumnClass` in the `TableModel` interface.

### defaultEditorsByColumnClass

    protected transient Hashtable defaultEditorsByColumnClass

  A table of objects that display and edit the contents of a cell, indexed by class as declared in `getColumnClass` in the `TableModel` interface.

### selectionForeground

    protected Color selectionForeground

  The foreground color of selected cells.

### selectionBackground

    protected Color selectionBackground

  The background color of selected cells.

Constructor Detail

### JTable

    public JTable()

  Constructs a default `JTable` that is initialized with a default data model, a default column model, and a default selection model.

  See Also:
    `createDefaultDataModel()`, `createDefaultColumnModel()`, `createDefaultSelectionModel()`

### JTable

    public JTable(TableModel dm)

  Constructs a `JTable` that is initialized with `dm` as the data model, a default column model, and a default selection model.

  Parameters:
    `dm` - the data model for the table
  See Also:
    `createDefaultColumnModel()`, `createDefaultSelectionModel()`

### JTable

    public JTable(TableModel dm,
                  TableColumnModel cm)

  Constructs a `JTable` that is initialized with `dm` as the data model, `cm` as the column model, and a default selection model.

  Parameters:
    `dm` - the data model for the table
    `cm` - the column model for the table
  See Also:
    `createDefaultSelectionModel()`

### JTable

    public JTable(TableModel dm,
                  TableColumnModel cm,
                  ListSelectionModel sm)

  Constructs a `JTable` that is initialized with `dm` as the data model, `cm` as the column model, and `sm` as the selection model. If any of the parameters are `null` this method will initialize the table with the corresponding default model. The `autoCreateColumnsFromModel` flag is set to false if `cm` is non-null, otherwise it is set to true and the column model is populated with suitable `TableColumns` for the columns in `dm`.

  Parameters:
    `dm` - the data model for the table
    `cm` - the column model for the table
    `sm` - the row selection model for the table
  See Also:
    `createDefaultDataModel()`, `createDefaultColumnModel()`, `createDefaultSelectionModel()`

### JTable

    public JTable(int numRows,
                  int numColumns)

  Constructs a `JTable` with `numRows` and `numColumns` of empty cells using `DefaultTableModel`. The columns will have names of the form "A", "B", "C", etc.

  Parameters:
    `numRows` - the number of rows the table holds
    `numColumns` - the number of columns the table holds
  See Also:
    `DefaultTableModel`

### JTable

    public JTable(Vector rowData,
                  Vector columnNames)

  Constructs a `JTable` to display the values in the `Vector` of `Vectors`, `rowData`, with column names, `columnNames`. The `Vectors` contained in `rowData` should contain the values for that row. In other words, the value of the cell at row 1, column 5 can be obtained with the following code:

      ((Vector)rowData.elementAt(1)).elementAt(5);

  Parameters:
    `rowData` - the data for the new table
    `columnNames` - names of each column

### JTable

    public JTable(Object[][] rowData,
                  Object[] columnNames)

  Constructs a `JTable` to display the values in the two dimensional array, `rowData`, with column names, `columnNames`. `rowData` is an array of rows, so the value of the cell at row 1, column 5 can be obtained with the following code:

       rowData[1][5];

  All rows must be of the same length as `columnNames`.

  Parameters:
    `rowData` - the data for the new table
    `columnNames` - names of each column

Method Detail

### addNotify

    public void addNotify()

  Calls the `configureEnclosingScrollPane` method.

  Overrides:
    `addNotify` in class `JComponent`
  See Also:
    `configureEnclosingScrollPane()`

### configureEnclosingScrollPane

    protected void configureEnclosingScrollPane()

  If this `JTable` is the `viewportView` of an enclosing `JScrollPane` (the usual situation), configure this `ScrollPane` by, amongst other things, installing the table's `tableHeader` as the `columnHeaderView` of the scroll pane. When a `JTable` is added to a `JScrollPane` in the usual way, using `new JScrollPane(myTable)`, `addNotify` is called in the `JTable` (when the table is added to the viewport). `JTable`'s `addNotify` method in turn calls this method, which is protected so that this default installation procedure can be overridden by a subclass.

  See Also:
    `addNotify()`

### removeNotify

    public void removeNotify()

  Calls the `unconfigureEnclosingScrollPane` method.

  Overrides:
    `removeNotify` in class `JComponent`
  See Also:
    `unconfigureEnclosingScrollPane()`

### unconfigureEnclosingScrollPane

    protected void unconfigureEnclosingScrollPane()

  Reverses the effect of `configureEnclosingScrollPane` by replacing the `columnHeaderView` of the enclosing scroll pane with `null`. `JTable`'s `removeNotify` method calls this method, which is protected so that this default uninstallation procedure can be overridden by a subclass.

  See Also:
    `removeNotify()`, `configureEnclosingScrollPane()`

### createScrollPaneForTable

    @Deprecated
    public static JScrollPane createScrollPaneForTable(JTable aTable)

  Deprecated. As of Swing version 1.0.2, replaced by `new JScrollPane(aTable)`.

  Equivalent to `new JScrollPane(aTable)`.

### setTableHeader

    public void setTableHeader(JTableHeader tableHeader)

  Sets the `tableHeader` working with this `JTable` to `newHeader`. It is legal to have a `null` `tableHeader`.

  Parameters:
    `tableHeader` - new tableHeader
  See Also:
    `getTableHeader()`

### getTableHeader

    public JTableHeader getTableHeader()

  Returns the `tableHeader` used by this `JTable`.

  Returns:
    the `tableHeader` used by this table
  See Also:
    `setTableHeader(javax.swing.table.JTableHeader)`

### setRowHeight

    public void setRowHeight(int rowHeight)

  Sets the height, in pixels, of all cells to `rowHeight`, revalidates, and repaints. The height of the cells will be equal to the row height minus the row margin.

  Parameters:
    `rowHeight` - new row height
  Throws:
    `IllegalArgumentException` - if `rowHeight` is less than 1
  See Also:
    `getRowHeight()`

### getRowHeight

    public int getRowHeight()

  Returns the height of a table row, in pixels. The default row height is 16.0.

  Returns:
    the height in pixels of a table row
  See Also:
    `setRowHeight(int)`

### setRowHeight

    public void setRowHeight(int row,
                             int rowHeight)

  Sets the height for `row` to `rowHeight`, revalidates, and repaints. The height of the cells in this row will be equal to the row height minus the row margin.

  Parameters:
    `row` - the row whose height is being changed
    `rowHeight` - new row height, in pixels
  Throws:
    `IllegalArgumentException` - if `rowHeight` is less than 1

### getRowHeight

    public int getRowHeight(int row)

  Returns the height, in pixels, of the cells in `row`.

  Parameters:
    `row` - the row whose height is to be returned
  Returns:
    the height, in pixels, of the cells in the row

### setRowMargin

    public void setRowMargin(int rowMargin)

  Sets the amount of empty space between cells in adjacent rows.

  Parameters:
    `rowMargin` - the number of pixels between cells in a row
  See Also:
    `getRowMargin()`

### getRowMargin

    public int getRowMargin()

  Gets the amount of empty space, in pixels, between cells. Equivalent to: `getIntercellSpacing().height`.

  Returns:
    the number of pixels between cells in a row
  See Also:
    `setRowMargin(int)`

### setIntercellSpacing

    public void setIntercellSpacing(Dimension intercellSpacing)

  Sets the `rowMargin` and the `columnMargin` -- the height and width of the space between cells -- to `intercellSpacing`.

  Parameters:
    `intercellSpacing` - a `Dimension` specifying the new width and height between cells
  See Also:
    `getIntercellSpacing()`

### getIntercellSpacing

    public Dimension getIntercellSpacing()

  Returns the horizontal and vertical space between cells. The default spacing is (1, 1), which provides room to draw the grid.

  Returns:
    the horizontal and vertical spacing between cells
  See Also:
    `setIntercellSpacing(java.awt.Dimension)`

### setGridColor

    public void setGridColor(Color gridColor)

  Sets the color used to draw grid lines to `gridColor` and redisplays. The default color is look and feel dependent.

  Parameters:
    `gridColor` - the new color of the grid lines
  Throws:
    `IllegalArgumentException` - if `gridColor` is `null`
  See Also:
    `getGridColor()`

### getGridColor

    public Color getGridColor()

  Returns the color used to draw grid lines. The default color is look and feel dependent.

  Returns:
    the color used to draw grid lines
  See Also:
    `setGridColor(java.awt.Color)`

### setShowGrid

    public void setShowGrid(boolean showGrid)

  Sets whether the table draws grid lines around cells. If `showGrid` is true it does; if it is false it doesn't. There is no `getShowGrid` method as this state is held in two variables -- `showHorizontalLines` and `showVerticalLines` -- each of which can be queried independently.

  Parameters:
    `showGrid` - true if table view should draw grid lines
  See Also:
    `setShowVerticalLines(boolean)`, `setShowHorizontalLines(boolean)`

### setShowHorizontalLines

    public void setShowHorizontalLines(boolean showHorizontalLines)

  Sets whether the table draws horizontal lines between cells. If `showHorizontalLines` is true it does; if it is false it doesn't.

  Parameters:
    `showHorizontalLines` - true if table view should draw horizontal lines
  See Also:
    `getShowHorizontalLines()`, `setShowGrid(boolean)`, `setShowVerticalLines(boolean)`

### setShowVerticalLines

    public void setShowVerticalLines(boolean showVerticalLines)

  Sets whether the table draws vertical lines between cells. If `showVerticalLines` is true it does; if it is false it doesn't.

  Parameters:
    `showVerticalLines` - true if table view should draw vertical lines
  See Also:
    `getShowVerticalLines()`, `setShowGrid(boolean)`, `setShowHorizontalLines(boolean)`

### getShowHorizontalLines

    public boolean getShowHorizontalLines()

  Returns true if the table draws horizontal lines between cells, false if it doesn't. The default is true.

  Returns:
    true if the table draws horizontal lines between cells, false if it doesn't
  See Also:
    `setShowHorizontalLines(boolean)`

### getShowVerticalLines

    public boolean getShowVerticalLines()

  Returns true if the table draws vertical lines between cells, false if it doesn't. The default is true.

  Returns:
    true if the table draws vertical lines between cells, false if it doesn't
  See Also:
    `setShowVerticalLines(boolean)`

### setAutoResizeMode

    public void setAutoResizeMode(int mode)

  Sets the table's auto resize mode when the table is resized.

  Parameters:
    `mode` - One of 5 legal values: AUTO_RESIZE_OFF, AUTO_RESIZE_NEXT_COLUMN, AUTO_RESIZE_SUBSEQUENT_COLUMNS, AUTO_RESIZE_LAST_COLUMN, AUTO_RESIZE_ALL_COLUMNS
  See Also:
    `getAutoResizeMode()`, `doLayout()`

### getAutoResizeMode

    public int getAutoResizeMode()

  Returns the auto resize mode of the table. The default mode is AUTO_RESIZE_SUBSEQUENT_COLUMNS.

  Returns:
    the autoResizeMode of the table
  See Also:
    `setAutoResizeMode(int)`, `doLayout()`

### setAutoCreateColumnsFromModel

    public void setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel)

  Sets this table's `autoCreateColumnsFromModel` flag. This method calls `createDefaultColumnsFromModel` if `autoCreateColumnsFromModel` changes from false to true.

  Parameters:
    `autoCreateColumnsFromModel` - true if `JTable` should automatically create columns
  See Also:
    `getAutoCreateColumnsFromModel()`, `createDefaultColumnsFromModel()`

### getAutoCreateColumnsFromModel

    public boolean getAutoCreateColumnsFromModel()

  Determines whether the table will create default columns from the model. If true, `setModel` will clear any existing columns and create new columns from the new model. Also, if the event in the `tableChanged` notification specifies that the entire table changed, then the columns will be rebuilt. The default is true.

  Returns:
    the autoCreateColumnsFromModel of the table
  See Also:
    `setAutoCreateColumnsFromModel(boolean)`, `createDefaultColumnsFromModel()`

### createDefaultColumnsFromModel

    public void createDefaultColumnsFromModel()

  Creates default columns for the table from the data model using the `getColumnCount` method defined in the `TableModel` interface.

  Clears any existing columns before creating the new columns based on information from the model.

  See Also:
    `getAutoCreateColumnsFromModel()`

### setDefaultRenderer

    public void setDefaultRenderer(Class<?> columnClass,
                                   TableCellRenderer renderer)

  Sets a default cell renderer to be used if no renderer has been set in a `TableColumn`. If renderer is `null`, removes the default renderer for this column class.

  Parameters:
    `columnClass` - set the default cell renderer for this columnClass
    `renderer` - default cell renderer to be used for this columnClass
  See Also:
    `getDefaultRenderer(java.lang.Class)`, `setDefaultEditor(java.lang.Class, javax.swing.table.TableCellEditor)`

### getDefaultRenderer

    public TableCellRenderer getDefaultRenderer(Class<?> columnClass)

  Returns the cell renderer to be used when no renderer has been set in a `TableColumn`. During the rendering of cells the renderer is fetched from a `Hashtable` of entries according to the class of the cells in the column. If there is no entry for this `columnClass` the method returns the entry for the most specific superclass. The `JTable` installs entries for `Object`, `Number`, and `Boolean`, all of which can be modified or replaced.

  Parameters:
    `columnClass` - return the default cell renderer for this columnClass
  Returns:
    the renderer for this columnClass
  See Also:
    `setDefaultRenderer(java.lang.Class, javax.swing.table.TableCellRenderer)`, `getColumnClass(int)`

### setDefaultEditor

    public void setDefaultEditor(Class<?> columnClass,
                                 TableCellEditor editor)

  Sets a default cell editor to be used if no editor has been set in a `TableColumn`. If no editing is required in a table, or a particular column in a table, uses the `isCellEditable` method in the `TableModel` interface to ensure that this `JTable` will not start an editor in these columns. If editor is `null`, removes the default editor for this column class.

  Parameters:
    `columnClass` - set the default cell editor for this columnClass
    `editor` - default cell editor to be used for this columnClass
  See Also:
    `TableModel.isCellEditable(int, int)`, `getDefaultEditor(java.lang.Class)`, `setDefaultRenderer(java.lang.Class, javax.swing.table.TableCellRenderer)`

### getDefaultEditor

    public TableCellEditor getDefaultEditor(Class<?> columnClass)

  Returns the editor to be used when no editor has been set in a `TableColumn`. During the editing of cells the editor is fetched from a `Hashtable` of entries according to the class of the cells in the column. If there is no entry for this `columnClass` the method returns the entry for the most specific superclass. The `JTable` installs entries for `Object`, `Number`, and `Boolean`, all of which can be modified or replaced.

  Parameters:
    `columnClass` - return the default cell editor for this columnClass
  Returns:
    the default cell editor to be used for this columnClass
  See Also:
    `setDefaultEditor(java.lang.Class, javax.swing.table.TableCellEditor)`, `getColumnClass(int)`

### setDragEnabled

    public void setDragEnabled(boolean b)

  Sets the `dragEnabled` property, which must be `true` to enable automatic drag handling (the first part of drag and drop) on this component. The `transferHandler` property needs to be set to a non-`null` value for the drag to do anything. The default value of the `dragEnabled`false.

  When automatic drag handling is enabled, most look and feels begin a drag-and-drop operation whenever the user presses the mouse button over a selection and then moves the mouse a few pixels. Setting this property to `true` can therefore have a subtle effect on how selections behave.

  Some look and feels might not support automatic drag and drop; they will ignore this property. You can work around such look and feels by modifying the component to directly call the `exportAsDrag` method of a `TransferHandler`.

  Parameters:
    `b` - the value to set the `dragEnabled` property to
  Throws:
    `HeadlessException` - if `b` is `true` and `GraphicsEnvironment.isHeadless()` returns `true`
  Since:
    1.4
  See Also:
    `GraphicsEnvironment.isHeadless()`, `getDragEnabled()`, `JComponent.setTransferHandler(javax.swing.TransferHandler)`, `TransferHandler`

### getDragEnabled

    public boolean getDragEnabled()

  Gets the value of the `dragEnabled` property.

  Returns:
    the value of the `dragEnabled` property
  Since:
    1.4
  See Also:
    `setDragEnabled(boolean)`

### setSelectionMode

    public void setSelectionMode(int selectionMode)

  Sets the table's selection mode to allow only single selections, a single contiguous interval, or multiple intervals.

  Note: `JTable` provides all the methods for handling column and row selection. When setting states, such as `setSelectionMode`, it not only updates the mode for the row selection model but also sets similar values in the selection model of the `columnModel`. If you want to have the row and column selection models operating in different modes, set them both directly.

  Both the row and column selection models for `JTable` default to using a `DefaultListSelectionModel` so that `JTable` works the same way as the `JList`. See the `setSelectionMode` method in `JList` for details about the modes.

  See Also:
    `JList.setSelectionMode(int)`

### setRowSelectionAllowed

    public void setRowSelectionAllowed(boolean rowSelectionAllowed)

  Sets whether the rows in this model can be selected.

  Parameters:
    `rowSelectionAllowed` - true if this model will allow row selection
  See Also:
    `getRowSelectionAllowed()`

### getRowSelectionAllowed

    public boolean getRowSelectionAllowed()

  Returns true if rows can be selected.

  Returns:
    true if rows can be selected, otherwise false
  See Also:
    `setRowSelectionAllowed(boolean)`

### setColumnSelectionAllowed

    public void setColumnSelectionAllowed(boolean columnSelectionAllowed)

  Sets whether the columns in this model can be selected.

  Parameters:
    `columnSelectionAllowed` - true if this model will allow column selection
  See Also:
    `getColumnSelectionAllowed()`

### getColumnSelectionAllowed

    public boolean getColumnSelectionAllowed()

  Returns true if columns can be selected.

  Returns:
    true if columns can be selected, otherwise false
  See Also:
    `setColumnSelectionAllowed(boolean)`

### setCellSelectionEnabled

    public void setCellSelectionEnabled(boolean cellSelectionEnabled)

  Sets whether this table allows both a column selection and a row selection to exist simultaneously. When set, the table treats the intersection of the row and column selection models as the selected cells. Override `isCellSelected` to change this default behavior. This method is equivalent to setting both the `rowSelectionAllowed` property and `columnSelectionAllowed` property of the `columnModel` to the supplied value.

  Parameters:
    `cellSelectionEnabled` - true if simultaneous row and column selection is allowed
  See Also:
    `getCellSelectionEnabled()`, `isCellSelected(int, int)`

### getCellSelectionEnabled

    public boolean getCellSelectionEnabled()

  Returns true if both row and column selection models are enabled. Equivalent to `getRowSelectionAllowed() && getColumnSelectionAllowed()`.

  Returns:
    true if both row and column selection models are enabled
  See Also:
    `setCellSelectionEnabled(boolean)`

### selectAll

    public void selectAll()

  Selects all rows, columns, and cells in the table.

### clearSelection

    public void clearSelection()

  Deselects all selected columns and rows.

### setRowSelectionInterval

    public void setRowSelectionInterval(int index0,
                                        int index1)

  Selects the rows from `index0` to `index1`, inclusive.

  Parameters:
    `index0` - one end of the interval
    `index1` - the other end of the interval
  Throws:
    `IllegalArgumentException` - if `index0` or `index1` lie outside [0, `getRowCount()`-1]

### setColumnSelectionInterval

    public void setColumnSelectionInterval(int index0,
                                           int index1)

  Selects the columns from `index0` to `index1`, inclusive.

  Parameters:
    `index0` - one end of the interval
    `index1` - the other end of the interval
  Throws:
    `IllegalArgumentException` - if `index0` or `index1` lie outside [0, `getColumnCount()`-1]

### addRowSelectionInterval

    public void addRowSelectionInterval(int index0,
                                        int index1)

  Adds the rows from `index0` to `index1`, inclusive, to the current selection.

  Parameters:
    `index0` - one end of the interval
    `index1` - the other end of the interval
  Throws:
    `IllegalArgumentException` - if `index0` or `index1` lie outside [0, `getRowCount()`-1]

### addColumnSelectionInterval

    public void addColumnSelectionInterval(int index0,
                                           int index1)

  Adds the columns from `index0` to `index1`, inclusive, to the current selection.

  Parameters:
    `index0` - one end of the interval
    `index1` - the other end of the interval
  Throws:
    `IllegalArgumentException` - if `index0` or `index1` lie outside [0, `getColumnCount()`-1]

### removeRowSelectionInterval

    public void removeRowSelectionInterval(int index0,
                                           int index1)

  Deselects the rows from `index0` to `index1`, inclusive.

  Parameters:
    `index0` - one end of the interval
    `index1` - the other end of the interval
  Throws:
    `IllegalArgumentException` - if `index0` or `index1` lie outside [0, `getRowCount()`-1]

### removeColumnSelectionInterval

    public void removeColumnSelectionInterval(int index0,
                                              int index1)

  Deselects the columns from `index0` to `index1`, inclusive.

  Parameters:
    `index0` - one end of the interval
    `index1` - the other end of the interval
  Throws:
    `IllegalArgumentException` - if `index0` or `index1` lie outside [0, `getColumnCount()`-1]

### getSelectedRow

    public int getSelectedRow()

  Returns the index of the first selected row, -1 if no row is selected.

  Returns:
    the index of the first selected row

### getSelectedColumn

    public int getSelectedColumn()

  Returns the index of the first selected column, -1 if no column is selected.

  Returns:
    the index of the first selected column

### getSelectedRows

    public int[] getSelectedRows()

  Returns the indices of all selected rows.

  Returns:
    an array of integers containing the indices of all selected rows, or an empty array if no row is selected
  See Also:
    `getSelectedRow()`

### getSelectedColumns

    public int[] getSelectedColumns()

  Returns the indices of all selected columns.

  Returns:
    an array of integers containing the indices of all selected columns, or an empty array if no column is selected
  See Also:
    `getSelectedColumn()`

### getSelectedRowCount

    public int getSelectedRowCount()

  Returns the number of selected rows.

  Returns:
    the number of selected rows, 0 if no rows are selected

### getSelectedColumnCount

    public int getSelectedColumnCount()

  Returns the number of selected columns.

  Returns:
    the number of selected columns, 0 if no columns are selected

### isRowSelected

    public boolean isRowSelected(int row)

  Returns true if the specified index is in the valid range of rows, and the row at that index is selected.

  Returns:
    true if `row` is a valid index and the row at that index is selected (where 0 is the first row)

### isColumnSelected

    public boolean isColumnSelected(int column)

  Returns true if the specified index is in the valid range of columns, and the column at that index is selected.

  Parameters:
    `column` - the column in the column model
  Returns:
    true if `column` is a valid index and the column at that index is selected (where 0 is the first column)

### isCellSelected

    public boolean isCellSelected(int row,
                                  int column)

  Returns true if the specified indices are in the valid range of rows and columns and the cell at the specified position is selected.

  Parameters:
    `row` - the row being queried
    `column` - the column being queried
  Returns:
    true if `row` and `column` are valid indices and the cell at index `(row, column)` is selected, where the first row and first column are at index 0

### changeSelection

    public void changeSelection(int rowIndex,
                                int columnIndex,
                                boolean toggle,
                                boolean extend)

  Updates the selection models of the table, depending on the state of the two flags: `toggle` and `extend`. Most changes to the selection that are the result of keyboard or mouse events received by the UI are channeled through this method so that the behavior may be overridden by a subclass. Some UIs may need more functionality than this method provides, such as when manipulating the lead for discontiguous selection, and may not call into this method for some selection changes.

  This implementation uses the following conventions:

  - `toggle`: false, `extend`: false. Clear the previous selection and ensure the new cell is selected.
  - `toggle`: false, `extend`: true. Extend the previous selection from the anchor to the specified cell, clearing all other selections.
  - `toggle`: true, `extend`: false. If the specified cell is selected, deselect it. If it is not selected, select it.
  - `toggle`: true, `extend`: true. Leave the selection state as it is, but move the anchor index to the specified location.

  Parameters:
    `rowIndex` - affects the selection at `row`
    `columnIndex` - affects the selection at `column`
    `toggle` - see description above
    `extend` - if true, extend the current selection

### getSelectionForeground

    public Color getSelectionForeground()

  Returns the foreground color for selected cells.

  Returns:
    the `Color` object for the foreground property
  See Also:
    `setSelectionForeground(java.awt.Color)`, `setSelectionBackground(java.awt.Color)`

### setSelectionForeground

    public void setSelectionForeground(Color selectionForeground)

  Sets the foreground color for selected cells. Cell renderers can use this color to render text and graphics for selected cells.

  The default value of this property is defined by the look and feel implementation.

  This is a JavaBeans bound property.

  Parameters:
    `selectionForeground` - the `Color` to use in the foreground for selected list items
  See Also:
    `getSelectionForeground()`, `setSelectionBackground(java.awt.Color)`, `JComponent.setForeground(java.awt.Color)`, `JComponent.setBackground(java.awt.Color)`, `JComponent.setFont(java.awt.Font)`

### getSelectionBackground

    public Color getSelectionBackground()

  Returns the background color for selected cells.

  Returns:
    the `Color` used for the background of selected list items
  See Also:
    `setSelectionBackground(java.awt.Color)`, `setSelectionForeground(java.awt.Color)`

### setSelectionBackground

    public void setSelectionBackground(Color selectionBackground)

  Sets the background color for selected cells. Cell renderers can use this color to the fill selected cells.

  The default value of this property is defined by the look and feel implementation.

  This is a JavaBeans bound property.

  Parameters:
    `selectionBackground` - the `Color` to use for the background of selected cells
  See Also:
    `getSelectionBackground()`, `setSelectionForeground(java.awt.Color)`, `JComponent.setForeground(java.awt.Color)`, `JComponent.setBackground(java.awt.Color)`, `JComponent.setFont(java.awt.Font)`

### getColumn

    public TableColumn getColumn(Object identifier)

  Returns the `TableColumn` object for the column in the table whose identifier is equal to `identifier`, when compared using `equals`.

  Parameters:
    `identifier` - the identifier object
  Returns:
    the `TableColumn` object that matches the identifier
  Throws:
    `IllegalArgumentException` - if `identifier` is `null` or no `TableColumn` has this identifier

### convertColumnIndexToModel

    public int convertColumnIndexToModel(int viewColumnIndex)

  Maps the index of the column in the view at `viewColumnIndex` to the index of the column in the table model. Returns the index of the corresponding column in the model. If `viewColumnIndex` is less than zero, returns `viewColumnIndex`.

  Parameters:
    `viewColumnIndex` - the index of the column in the view
  Returns:
    the index of the corresponding column in the model
  See Also:
    `convertColumnIndexToView(int)`

### convertColumnIndexToView

    public int convertColumnIndexToView(int modelColumnIndex)

  Maps the index of the column in the table model at `modelColumnIndex` to the index of the column in the view. Returns the index of the corresponding column in the view; returns -1 if this column is not being displayed. If `modelColumnIndex` is less than zero, returns `modelColumnIndex`.

  Parameters:
    `modelColumnIndex` - the index of the column in the model
  Returns:
    the index of the corresponding column in the view
  See Also:
    `convertColumnIndexToModel(int)`

### getRowCount

    public int getRowCount()

  Returns the number of rows in this table's model.

  Returns:
    the number of rows in this table's model
  See Also:
    `getColumnCount()`

### getColumnCount

    public int getColumnCount()

  Returns the number of columns in the column model. Note that this may be different from the number of columns in the table model.

  Returns:
    the number of columns in the table
  See Also:
    `getRowCount()`, `removeColumn(javax.swing.table.TableColumn)`

### getColumnName

    public String getColumnName(int column)

  Returns the name of the column appearing in the view at column position `column`.

  Parameters:
    `column` - the column in the view being queried
  Returns:
    the name of the column at position `column` in the view where the first column is column 0

### getColumnClass

    public Class<?> getColumnClass(int column)

  Returns the type of the column appearing in the view at column position `column`.

  Parameters:
    `column` - the column in the view being queried
  Returns:
    the type of the column at position `column` in the view where the first column is column 0

### getValueAt

    public Object getValueAt(int row,
                             int column)

  Returns the cell value at `row` and `column`.

  Note: The column is specified in the table view's display order, and not in the `TableModel`'s column order. This is an important distinction because as the user rearranges the columns in the table, the column at a given index in the view will change. Meanwhile the user's actions never affect the model's column ordering.

  Parameters:
    `row` - the row whose value is to be queried
    `column` - the column whose value is to be queried
  Returns:
    the Object at the specified cell

### setValueAt

    public void setValueAt(Object aValue,
                           int row,
                           int column)

  Sets the value for the cell in the table model at `row` and `column`.

  Note: The column is specified in the table view's display order, and not in the `TableModel`'s column order. This is an important distinction because as the user rearranges the columns in the table, the column at a given index in the view will change. Meanwhile the user's actions never affect the model's column ordering. `aValue` is the new value.

  Parameters:
    `aValue` - the new value
    `row` - the row of the cell to be changed
    `column` - the column of the cell to be changed
  See Also:
    `getValueAt(int, int)`

### isCellEditable

    public boolean isCellEditable(int row,
                                  int column)

  Returns true if the cell at `row` and `column` is editable. Otherwise, invoking `setValueAt` on the cell will have no effect.

  Note: The column is specified in the table view's display order, and not in the `TableModel`'s column order. This is an important distinction because as the user rearranges the columns in the table, the column at a given index in the view will change. Meanwhile the user's actions never affect the model's column ordering.

  Parameters:
    `row` - the row whose value is to be queried
    `column` - the column whose value is to be queried
  Returns:
    true if the cell is editable
  See Also:
    `setValueAt(java.lang.Object, int, int)`

### addColumn

    public void addColumn(TableColumn aColumn)

  Appends `aColumn` to the end of the array of columns held by this `JTable`'s column model. If the column name of `aColumn` is `null`, sets the column name of `aColumn` to the name returned by `getModel().getColumnName()`.

  To add a column to this `JTable` to display the `modelColumn`'th column of data in the model with a given `width`, `cellRenderer`, and `cellEditor` you can use:

            addColumn(new TableColumn(modelColumn, width, cellRenderer, cellEditor));

  [Any of the `TableColumn` constructors can be used instead of this one.] The model column number is stored inside the `TableColumn` and is used during rendering and editing to locate the appropriates data values in the model. The model column number does not change when columns are reordered in the view.

  Parameters:
    `aColumn` - the `TableColumn` to be added
  See Also:
    `removeColumn(javax.swing.table.TableColumn)`

### removeColumn

    public void removeColumn(TableColumn aColumn)

  Removes `aColumn` from this `JTable`'s array of columns. Note: this method does not remove the column of data from the model; it just removes the `TableColumn` that was responsible for displaying it.

  Parameters:
    `aColumn` - the `TableColumn` to be removed
  See Also:
    `addColumn(javax.swing.table.TableColumn)`

### moveColumn

    public void moveColumn(int column,
                           int targetColumn)

  Moves the column `column` to the position currently occupied by the column `targetColumn` in the view. The old column at `targetColumn` is shifted left or right to make room.

  Parameters:
    `column` - the index of column to be moved
    `targetColumn` - the new index of the column

### columnAtPoint

    public int columnAtPoint(Point point)

  Returns the index of the column that `point` lies in, or -1 if the result is not in the range [0, `getColumnCount()`-1].

  Parameters:
    `point` - the location of interest
  Returns:
    the index of the column that `point` lies in, or -1 if the result is not in the range [0, `getColumnCount()`-1]
  See Also:
    `rowAtPoint(java.awt.Point)`

### rowAtPoint

    public int rowAtPoint(Point point)

  Returns the index of the row that `point` lies in, or -1 if the result is not in the range [0, `getRowCount()`-1].

  Parameters:
    `point` - the location of interest
  Returns:
    the index of the row that `point` lies in, or -1 if the result is not in the range [0, `getRowCount()`-1]
  See Also:
    `columnAtPoint(java.awt.Point)`

### getCellRect

    public Rectangle getCellRect(int row,
                                 int column,
                                 boolean includeSpacing)

  Returns a rectangle for the cell that lies at the intersection of `row` and `column`. If `includeSpacing` is true then the value returned has the full height and width of the row and column specified. If it is false, the returned rectangle is inset by the intercell spacing to return the true bounds of the rendering or editing component as it will be set during rendering.

  If the column index is valid but the row index is less than zero the method returns a rectangle with the `y` and `height` values set appropriately and the `x` and `width` values both set to zero. In general, when either the row or column indices indicate a cell outside the appropriate range, the method returns a rectangle depicting the closest edge of the closest cell that is within the table's range. When both row and column indices are out of range the returned rectangle covers the closest point of the closest cell.

  In all cases, calculations that use this method to calculate results along one axis will not fail because of anomalies in calculations along the other axis. When the cell is not valid the `includeSpacing` parameter is ignored.

  Parameters:
    `row` - the row index where the desired cell is located
    `column` - the column index where the desired cell is located in the display; this is not necessarily the same as the column index in the data model for the table; the `convertColumnIndexToView(int)` method may be used to convert a data model column index to a display column index
    `includeSpacing` - if false, return the true cell bounds - computed by subtracting the intercell spacing from the height and widths of the column and row models
  Returns:
    the rectangle containing the cell at location `row`,`column`

### doLayout

    public void doLayout()

  Causes this table to lay out its rows and columns. Overridden so that columns can be resized to accomodate a change in the size of a containing parent. Resizes one or more of the columns in the table so that the total width of all of this `JTable`'s columns is equal to the width of the table.

  Before the layout begins the method gets the `resizingColumn` of the `tableHeader`. When the method is called as a result of the resizing of an enclosing window, the `resizingColumn` is `null`. This means that resizing has taken place "outside" the `JTable` and the change - or "delta" - should be distributed to all of the columns regardless of this `JTable`'s automatic resize mode.

  If the `resizingColumn` is not `null`, it is one of the columns in the table that has changed size rather than the table itself. In this case the auto-resize modes govern the way the extra (or deficit) space is distributed amongst the available columns.

  The modes are:

  - AUTO_RESIZE_OFF: Don't automatically adjust the column's widths at all. Use a horizontal scrollbar to accomodate the columns when their sum exceeds the width of the `Viewport`. If the `JTable` is not enclosed in a `JScrollPane` this may leave parts of the table invisible.
  - AUTO_RESIZE_NEXT_COLUMN: Use just the column after the resizing column. This results in the "boundary" or divider between adjacent cells being independently adjustable.
  - AUTO_RESIZE_SUBSEQUENT_COLUMNS: Use all columns after the one being adjusted to absorb the changes. This is the default behavior.
  - AUTO_RESIZE_LAST_COLUMN: Automatically adjust the size of the last column only. If the bounds of the last column prevent the desired size from being allocated, set the width of the last column to the appropriate limit and make no further adjustments.
  - AUTO_RESIZE_ALL_COLUMNS: Spread the delta amongst all the columns in the `JTable`, including the one that is being adjusted.

  Note: When a `JTable` makes adjustments to the widths of the columns it respects their minimum and maximum values absolutely. It is therefore possible that, even after this method is called, the total width of the columns is still not equal to the width of the table. When this happens the `JTable` does not put itself in AUTO_RESIZE_OFF mode to bring up a scroll bar, or break other commitments of its current auto-resize mode -- instead it allows its bounds to be set larger (or smaller) than the total of the column minimum or maximum, meaning, either that there will not be enough room to display all of the columns, or that the columns will not fill the `JTable`'s bounds. These respectively, result in the clipping of some columns or an area being painted in the `JTable`'s background color during painting.

  The mechanism for distributing the delta amongst the available columns is provided in a private method in the `JTable` class:

         adjustSizes(long targetSize, final Resizable3 r, boolean inverse)

  an explanation of which is provided in the following section. `Resizable3` is a private interface that allows any data structure containing a collection of elements with a size, preferred size, maximum size and minimum size to have its elements manipulated by the algorithm.

  ### Distributing the delta

  #### Overview

  Call "DELTA" the difference between the target size and the sum of the preferred sizes of the elements in r. The individual sizes are calculated by taking the original preferred sizes and adding a share of the DELTA - that share being based on how far each preferred size is from its limiting bound (minimum or maximum).

  #### Definition

  Call the individual constraints min[i], max[i], and pref[i].

  Call their respective sums: MIN, MAX, and PREF.

  Each new size will be calculated using:

                size[i] = pref[i] + delta[i]

  where each individual delta[i] is calculated according to:

  If (DELTA < 0) we are in shrink mode where:

                              DELTA
                delta[i] = ------------ * (pref[i] - min[i])
                           (PREF - MIN)

  If (DELTA > 0) we are in expand mode where:

                              DELTA
                delta[i] = ------------ * (max[i] - pref[i])
                            (MAX - PREF)

  The overall effect is that the total size moves that same percentage, k, towards the total minimum or maximum and that percentage guarantees accomodation of the required space, DELTA.

  #### Details

  Naive evaluation of the formulae presented here would be subject to the aggregated rounding errors caused by doing this operation in finite precision (using ints). To deal with this, the multiplying factor above, is constantly recalculated and this takes account of the rounding errors in the previous iterations. The result is an algorithm that produces a set of integers whose values exactly sum to the supplied `targetSize`, and does so by spreading the rounding errors evenly over the given elements.

  #### When the MAX and MIN bounds are hit

  When `targetSize` is outside the [MIN, MAX] range, the algorithm sets all sizes to their appropriate limiting value (maximum or minimum).

  Overrides:
    `doLayout` in class `Container`
  See Also:
    `LayoutManager.layoutContainer(java.awt.Container)`, `Container.setLayout(java.awt.LayoutManager)`, `Container.validate()`

### sizeColumnsToFit

    @Deprecated
    public void sizeColumnsToFit(boolean lastColumnOnly)

  Deprecated. As of Swing version 1.0.3, replaced by `doLayout()`.

  Sizes the table columns to fit the available space.

  See Also:
    `doLayout()`

### sizeColumnsToFit

    public void sizeColumnsToFit(int resizingColumn)

  Obsolete as of Java 2 platform v1.4. Please use the `doLayout()` method instead.

  Parameters:
    `resizingColumn` - the column whose resizing made this adjustment necessary or -1 if there is no such column
  See Also:
    `doLayout()`

### getToolTipText

    public String getToolTipText(MouseEvent event)

  Overrides `JComponent`'s `getToolTipText` method in order to allow the renderer's tips to be used if it has text set.

  Note: For `JTable` to properly display tooltips of its renderers `JTable` must be a registered component with the `ToolTipManager`. This is done automatically in `initializeLocalVars`, but if at a later point `JTable` is told `setToolTipText(null)` it will unregister the table component, and no tips from renderers will display anymore.

  Overrides:
    `getToolTipText` in class `JComponent`
  See Also:
    `JComponent.getToolTipText()`

### setSurrendersFocusOnKeystroke

    public void setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke)

  Sets whether editors in this JTable get the keyboard focus when an editor is activated as a result of the JTable forwarding keyboard events for a cell. By default, this property is false, and the JTable retains the focus unless the cell is clicked.

  Parameters:
    `surrendersFocusOnKeystroke` - true if the editor should get the focus when keystrokes cause the editor to be activated
  See Also:
    `getSurrendersFocusOnKeystroke()`

### getSurrendersFocusOnKeystroke

    public boolean getSurrendersFocusOnKeystroke()

  Returns true if the editor should get the focus when keystrokes cause the editor to be activated

  Returns:
    true if the editor should get the focus when keystrokes cause the editor to be activated
  See Also:
    `setSurrendersFocusOnKeystroke(boolean)`

### editCellAt

    public boolean editCellAt(int row,
                              int column)

  Programmatically starts editing the cell at `row` and `column`, if those indices are in the valid range, and the cell at those indices is editable. Note that this is a convenience method for `editCellAt(int, int, null)`.

  Parameters:
    `row` - the row to be edited
    `column` - the column to be edited
  Returns:
    false if for any reason the cell cannot be edited, or if the indices are invalid

### editCellAt

    public boolean editCellAt(int row,
                              int column,
                              EventObject e)

  Programmatically starts editing the cell at `row` and `column`, if those indices are in the valid range, and the cell at those indices is editable. To prevent the `JTable` from editing a particular table, column or cell value, return false from the `isCellEditable` method in the `TableModel` interface.

  Parameters:
    `row` - the row to be edited
    `column` - the column to be edited
    `e` - event to pass into `shouldSelectCell`; note that as of Java 2 platform v1.2, the call to `shouldSelectCell` is no longer made
  Returns:
    false if for any reason the cell cannot be edited, or if the indices are invalid

### isEditing

    public boolean isEditing()

  Returns true if a cell is being edited.

  Returns:
    true if the table is editing a cell
  See Also:
    `editingColumn`, `editingRow`

### getEditorComponent

    public Component getEditorComponent()

  Returns the component that is handling the editing session. If nothing is being edited, returns null.

  Returns:
    Component handling editing session

### getEditingColumn

    public int getEditingColumn()

  Returns the index of the column that contains the cell currently being edited. If nothing is being edited, returns -1.

  Returns:
    the index of the column that contains the cell currently being edited; returns -1 if nothing being edited
  See Also:
    `editingRow`

### getEditingRow

    public int getEditingRow()

  Returns the index of the row that contains the cell currently being edited. If nothing is being edited, returns -1.

  Returns:
    the index of the row that contains the cell currently being edited; returns -1 if nothing being edited
  See Also:
    `editingColumn`

### getUI

    public TableUI getUI()

  Returns the L&F object that renders this component.

  Returns:
    the `TableUI` object that renders this component

### setUI

    public void setUI(TableUI ui)

  Sets the L&F object that renders this component and repaints.

  Parameters:
    `ui` - the TableUI L&F object
  See Also:
    `UIDefaults.getUI(javax.swing.JComponent)`

### updateUI

    public void updateUI()

  Notification from the `UIManager` that the L&F has changed. Replaces the current UI object with the latest version from the `UIManager`.

  Overrides:
    `updateUI` in class `JComponent`
  See Also:
    `JComponent.updateUI()`

### getUIClassID

    public String getUIClassID()

  Returns the suffix used to construct the name of the L&F class used to render this component.

  Overrides:
    `getUIClassID` in class `JComponent`
  Returns:
    the string "TableUI"
  See Also:
    `JComponent.getUIClassID()`, `UIDefaults.getUI(javax.swing.JComponent)`

### setModel

    public void setModel(TableModel dataModel)

  Sets the data model for this table to `newModel` and registers with it for listener notifications from the new data model.

  Parameters:
    `dataModel` - the new data source for this table
  Throws:
    `IllegalArgumentException` - if `newModel` is `null`
  See Also:
    `getModel()`

### getModel

    public TableModel getModel()

  Returns the `TableModel` that provides the data displayed by this `JTable`.

  Returns:
    the `TableModel` that provides the data displayed by this `JTable`
  See Also:
    `setModel(javax.swing.table.TableModel)`

### setColumnModel

    public void setColumnModel(TableColumnModel columnModel)

  Sets the column model for this table to `newModel` and registers for listener notifications from the new column model. Also sets the column model of the `JTableHeader` to `columnModel`.

  Parameters:
    `columnModel` - the new data source for this table
  Throws:
    `IllegalArgumentException` - if `columnModel` is `null`
  See Also:
    `getColumnModel()`

### getColumnModel

    public TableColumnModel getColumnModel()

  Returns the `TableColumnModel` that contains all column information of this table.

  Returns:
    the object that provides the column state of the table
  See Also:
    `setColumnModel(javax.swing.table.TableColumnModel)`

### setSelectionModel

    public void setSelectionModel(ListSelectionModel newModel)

  Sets the row selection model for this table to `newModel` and registers for listener notifications from the new selection model.

  Parameters:
    `newModel` - the new selection model
  Throws:
    `IllegalArgumentException` - if `newModel` is `null`
  See Also:
    `getSelectionModel()`

### getSelectionModel

    public ListSelectionModel getSelectionModel()

  Returns the `ListSelectionModel` that is used to maintain row selection state.

  Returns:
    the object that provides row selection state, `null` if row selection is not allowed
  See Also:
    `setSelectionModel(javax.swing.ListSelectionModel)`

### tableChanged

    public void tableChanged(TableModelEvent e)

  Invoked when this table's `TableModel` generates a `TableModelEvent`. The `TableModelEvent` should be constructed in the coordinate system of the model; the appropriate mapping to the view coordinate system is performed by this `JTable` when it receives the event.

  Application code will not use these methods explicitly, they are used internally by `JTable`.

  Note that as of 1.3, this method clears the selection, if any.

  Specified by:
    `tableChanged` in interface `TableModelListener`

### columnAdded

    public void columnAdded(TableColumnModelEvent e)

  Invoked when a column is added to the table column model.

  Application code will not use these methods explicitly, they are used internally by JTable.

  Specified by:
    `columnAdded` in interface `TableColumnModelListener`
  See Also:
    `TableColumnModelListener`

### columnRemoved

    public void columnRemoved(TableColumnModelEvent e)

  Invoked when a column is removed from the table column model.

  Application code will not use these methods explicitly, they are used internally by JTable.

  Specified by:
    `columnRemoved` in interface `TableColumnModelListener`
  See Also:
    `TableColumnModelListener`

### columnMoved

    public void columnMoved(TableColumnModelEvent e)

  Invoked when a column is repositioned. If a cell is being edited, then editing is stopped and the cell is redrawn.

  Application code will not use these methods explicitly, they are used internally by JTable.

  Specified by:
    `columnMoved` in interface `TableColumnModelListener`
  Parameters:
    `e` - the event received
  See Also:
    `TableColumnModelListener`

### columnMarginChanged

    public void columnMarginChanged(ChangeEvent e)

  Invoked when a column is moved due to a margin change. If a cell is being edited, then editing is stopped and the cell is redrawn.

  Application code will not use these methods explicitly, they are used internally by JTable.

  Specified by:
    `columnMarginChanged` in interface `TableColumnModelListener`
  Parameters:
    `e` - the event received
  See Also:
    `TableColumnModelListener`

### columnSelectionChanged

    public void columnSelectionChanged(ListSelectionEvent e)

  Invoked when the selection model of the `TableColumnModel` is changed.

  Application code will not use these methods explicitly, they are used internally by JTable.

  Specified by:
    `columnSelectionChanged` in interface `TableColumnModelListener`
  Parameters:
    `e` - the event received
  See Also:
    `TableColumnModelListener`

### valueChanged

    public void valueChanged(ListSelectionEvent e)

  Invoked when the row selection changes -- repaints to show the new selection.

  Application code will not use these methods explicitly, they are used internally by JTable.

  Specified by:
    `valueChanged` in interface `ListSelectionListener`
  Parameters:
    `e` - the event received
  See Also:
    `ListSelectionListener`

### editingStopped

    public void editingStopped(ChangeEvent e)

  Invoked when editing is finished. The changes are saved and the editor is discarded.

  Application code will not use these methods explicitly, they are used internally by JTable.

  Specified by:
    `editingStopped` in interface `CellEditorListener`
  Parameters:
    `e` - the event received
  See Also:
    `CellEditorListener`

### editingCanceled

    public void editingCanceled(ChangeEvent e)

  Invoked when editing is canceled. The editor object is discarded and the cell is rendered once again.

  Application code will not use these methods explicitly, they are used internally by JTable.

  Specified by:
    `editingCanceled` in interface `CellEditorListener`
  Parameters:
    `e` - the event received
  See Also:
    `CellEditorListener`

### setPreferredScrollableViewportSize

    public void setPreferredScrollableViewportSize(Dimension size)

  Sets the preferred size of the viewport for this table.

  Parameters:
    `size` - a `Dimension` object specifying the `preferredSize` of a `JViewport` whose view is this table
  See Also:
    `Scrollable.getPreferredScrollableViewportSize()`

### getPreferredScrollableViewportSize

    public Dimension getPreferredScrollableViewportSize()

  Returns the preferred size of the viewport for this table.

  Specified by:
    `getPreferredScrollableViewportSize` in interface `Scrollable`
  Returns:
    a `Dimension` object containing the `preferredSize` of the `JViewport` which displays this table
  See Also:
    `Scrollable.getPreferredScrollableViewportSize()`

### getScrollableUnitIncrement

    public int getScrollableUnitIncrement(Rectangle visibleRect,
                                          int orientation,
                                          int direction)

  Returns the scroll increment (in pixels) that completely exposes one new row or column (depending on the orientation).

  This method is called each time the user requests a unit scroll.

  Specified by:
    `getScrollableUnitIncrement` in interface `Scrollable`
  Parameters:
    `visibleRect` - the view area visible within the viewport
    `orientation` - either `SwingConstants.VERTICAL` or `SwingConstants.HORIZONTAL`
    `direction` - less than zero to scroll up/left, greater than zero for down/right
  Returns:
    the "unit" increment for scrolling in the specified direction
  See Also:
    `Scrollable.getScrollableUnitIncrement(java.awt.Rectangle, int, int)`

### getScrollableBlockIncrement

    public int getScrollableBlockIncrement(Rectangle visibleRect,
                                           int orientation,
                                           int direction)

  Returns `visibleRect.height` or `visibleRect.width`, depending on this table's orientation. Note that as of Swing 1.1.1 (Java 2 v 1.2.2) the value returned will ensure that the viewport is cleanly aligned on a row boundary.

  Specified by:
    `getScrollableBlockIncrement` in interface `Scrollable`
  Parameters:
    `visibleRect` - The view area visible within the viewport
    `orientation` - Either SwingConstants.VERTICAL or SwingConstants.HORIZONTAL.
    `direction` - Less than zero to scroll up/left, greater than zero for down/right.
  Returns:
    `visibleRect.height` or `visibleRect.width` per the orientation
  See Also:
    `Scrollable.getScrollableBlockIncrement(java.awt.Rectangle, int, int)`

### getScrollableTracksViewportWidth

    public boolean getScrollableTracksViewportWidth()

  Returns false if `autoResizeMode` is set to `AUTO_RESIZE_OFF`, which indicates that the width of the viewport does not determine the width of the table. Otherwise returns true.

  Specified by:
    `getScrollableTracksViewportWidth` in interface `Scrollable`
  Returns:
    false if `autoResizeMode` is set to `AUTO_RESIZE_OFF`, otherwise returns true
  See Also:
    `Scrollable.getScrollableTracksViewportWidth()`

### getScrollableTracksViewportHeight

    public boolean getScrollableTracksViewportHeight()

  Returns false to indicate that the height of the viewport does not determine the height of the table.

  Specified by:
    `getScrollableTracksViewportHeight` in interface `Scrollable`
  Returns:
    false
  See Also:
    `Scrollable.getScrollableTracksViewportHeight()`

### processKeyBinding

    protected boolean processKeyBinding(KeyStroke ks,
                                        KeyEvent e,
                                        int condition,
                                        boolean pressed)

  Description copied from class: `JComponent`
  Invoked to process the key bindings for `ks` as the result of the `KeyEvent` `e`. This obtains the appropriate `InputMap`, gets the binding, gets the action from the `ActionMap`, and then (if the action is found and the component is enabled) invokes `notifyAction` to notify the action.

  Overrides:
    `processKeyBinding` in class `JComponent`
  Parameters:
    `ks` - the `KeyStroke` queried
    `e` - the `KeyEvent`
    `condition` - one of the following values:
    - JComponent.WHEN_FOCUSED
    - JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT
    - JComponent.WHEN_IN_FOCUSED_WINDOW
    `pressed` - true if the key is pressed
  Returns:
    true if there was a binding to an action, and the action was enabled

### createDefaultRenderers

    protected void createDefaultRenderers()

  Creates default cell renderers for objects, numbers, doubles, dates, booleans, and icons.

  See Also:
    `DefaultTableCellRenderer`

### createDefaultEditors

    protected void createDefaultEditors()

  Creates default cell editors for objects, numbers, and boolean values.

  See Also:
    `DefaultCellEditor`

### initializeLocalVars

    protected void initializeLocalVars()

  Initializes table properties to their default values.

### createDefaultDataModel

    protected TableModel createDefaultDataModel()

  Returns the default table model object, which is a `DefaultTableModel`. A subclass can override this method to return a different table model object.

  Returns:
    the default table model object
  See Also:
    `DefaultTableModel`

### createDefaultColumnModel

    protected TableColumnModel createDefaultColumnModel()

  Returns the default column model object, which is a `DefaultTableColumnModel`. A subclass can override this method to return a different column model object.

  Returns:
    the default column model object
  See Also:
    `DefaultTableColumnModel`

### createDefaultSelectionModel

    protected ListSelectionModel createDefaultSelectionModel()

  Returns the default selection model object, which is a `DefaultListSelectionModel`. A subclass can override this method to return a different selection model object.

  Returns:
    the default selection model object
  See Also:
    `DefaultListSelectionModel`

### createDefaultTableHeader

    protected JTableHeader createDefaultTableHeader()

  Returns the default table header object, which is a `JTableHeader`. A subclass can override this method to return a different table header object.

  Returns:
    the default table header object
  See Also:
    `JTableHeader`

### resizeAndRepaint

    protected void resizeAndRepaint()

  Equivalent to `revalidate` followed by `repaint`.

### getCellEditor

    public TableCellEditor getCellEditor()

  Returns the cell editor.

  Returns:
    the `TableCellEditor` that does the editing
  See Also:
    `cellEditor`

### setCellEditor

    public void setCellEditor(TableCellEditor anEditor)

  Sets the `cellEditor` variable.

  Parameters:
    `anEditor` - the TableCellEditor that does the editing
  See Also:
    `cellEditor`

### setEditingColumn

    public void setEditingColumn(int aColumn)

  Sets the `editingColumn` variable.

  Parameters:
    `aColumn` - the column of the cell to be edited
  See Also:
    `editingColumn`

### setEditingRow

    public void setEditingRow(int aRow)

  Sets the `editingRow` variable.

  Parameters:
    `aRow` - the row of the cell to be edited
  See Also:
    `editingRow`

### getCellRenderer

    public TableCellRenderer getCellRenderer(int row,
                                             int column)

  Returns an appropriate renderer for the cell specified by this row and column. If the `TableColumn` for this column has a non-null renderer, returns that. If not, finds the class of the data in this column (using `getColumnClass`) and returns the default renderer for this type of data.

  Note: Throughout the table package, the internal implementations always use this method to provide renderers so that this default behavior can be safely overridden by a subclass.

  Parameters:
    `row` - the row of the cell to render, where 0 is the first row
    `column` - the column of the cell to render, where 0 is the first column
  Returns:
    the assigned renderer; if `null` returns the default renderer for this type of object
  See Also:
    `DefaultTableCellRenderer`, `TableColumn.setCellRenderer(javax.swing.table.TableCellRenderer)`, `setDefaultRenderer(java.lang.Class, javax.swing.table.TableCellRenderer)`

### prepareRenderer

    public Component prepareRenderer(TableCellRenderer renderer,
                                     int row,
                                     int column)

  Prepares the renderer by querying the data model for the value and selection state of the cell at `row`, `column`. Returns the component (may be a `Component` or a `JComponent`) under the event location.

  Note: Throughout the table package, the internal implementations always use this method to prepare renderers so that this default behavior can be safely overridden by a subclass.

  Parameters:
    `renderer` - the `TableCellRenderer` to prepare
    `row` - the row of the cell to render, where 0 is the first row
    `column` - the column of the cell to render, where 0 is the first column
  Returns:
    the `Component` under the event location

### getCellEditor

    public TableCellEditor getCellEditor(int row,
                                         int column)

  Returns an appropriate editor for the cell specified by `row` and `column`. If the `TableColumn` for this column has a non-null editor, returns that. If not, finds the class of the data in this column (using `getColumnClass`) and returns the default editor for this type of data.

  Note: Throughout the table package, the internal implementations always use this method to provide editors so that this default behavior can be safely overridden by a subclass.

  Parameters:
    `row` - the row of the cell to edit, where 0 is the first row
    `column` - the column of the cell to edit, where 0 is the first column
  Returns:
    the editor for this cell; if `null` return the default editor for this type of cell
  See Also:
    `DefaultCellEditor`

### prepareEditor

    public Component prepareEditor(TableCellEditor editor,
                                   int row,
                                   int column)

  Prepares the editor by querying the data model for the value and selection state of the cell at `row`, `column`.

  Note: Throughout the table package, the internal implementations always use this method to prepare editors so that this default behavior can be safely overridden by a subclass.

  Parameters:
    `editor` - the `TableCellEditor` to set up
    `row` - the row of the cell to edit, where 0 is the first row
    `column` - the column of the cell to edit, where 0 is the first column
  Returns:
    the `Component` being edited

### removeEditor

    public void removeEditor()

  Discards the editor object and frees the real estate it used for cell rendering.

### paramString

    protected String paramString()

  Returns a string representation of this table. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be `null`.

  Overrides:
    `paramString` in class `JComponent`
  Returns:
    a string representation of this table

### print

    public boolean print()
                  throws PrinterException

  A convenience method that displays a printing dialog, and then prints this `JTable` in mode `PrintMode.FIT_WIDTH`, with no header or footer text. A modal progress dialog, with an abort option, will be shown for the duration of printing.

  Note: In headless mode, no dialogs will be shown.

  Returns:
    true, unless printing is cancelled by the user
  Throws:
    `PrinterException` - if an error in the print system causes the job to be aborted
  Since:
    1.5
  See Also:
    `print(JTable.PrintMode, MessageFormat, MessageFormat, boolean, PrintRequestAttributeSet, boolean)`, `getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)`

### print

    public boolean print(JTable.PrintMode printMode)
                  throws PrinterException

  A convenience method that displays a printing dialog, and then prints this `JTable` in the given printing mode, with no header or footer text. A modal progress dialog, with an abort option, will be shown for the duration of printing.

  Note: In headless mode, no dialogs will be shown.

  Parameters:
    `printMode` - the printing mode that the printable should use
  Returns:
    true, unless printing is cancelled by the user
  Throws:
    `PrinterException` - if an error in the print system causes the job to be aborted
  Since:
    1.5
  See Also:
    `print(JTable.PrintMode, MessageFormat, MessageFormat, boolean, PrintRequestAttributeSet, boolean)`, `getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)`

### print

    public boolean print(JTable.PrintMode printMode,
                         MessageFormat headerFormat,
                         MessageFormat footerFormat)
                  throws PrinterException

  A convenience method that displays a printing dialog, and then prints this `JTable` in the given printing mode, with the specified header and footer text. A modal progress dialog, with an abort option, will be shown for the duration of printing.

  Note: In headless mode, no dialogs will be shown.

  Parameters:
    `printMode` - the printing mode that the printable should use
    `headerFormat` - a `MessageFormat` specifying the text to be used in printing a header, or null for none
    `footerFormat` - a `MessageFormat` specifying the text to be used in printing a footer, or null for none
  Returns:
    true, unless printing is cancelled by the user
  Throws:
    `PrinterException` - if an error in the print system causes the job to be aborted
  Since:
    1.5
  See Also:
    `print(JTable.PrintMode, MessageFormat, MessageFormat, boolean, PrintRequestAttributeSet, boolean)`, `getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)`

### print

    public boolean print(JTable.PrintMode printMode,
                         MessageFormat headerFormat,
                         MessageFormat footerFormat,
                         boolean showPrintDialog,
                         PrintRequestAttributeSet attr,
                         boolean interactive)
                  throws PrinterException,
                         HeadlessException

  Print this `JTable`. Takes steps that the majority of developers would take in order to print a `JTable`. In short, it prepares the table, calls `getPrintable` to fetch an appropriate `Printable`, and then sends it to the printer.

  A `boolean` parameter allows you to specify whether or not a printing dialog is displayed to the user. When it is, the user may use the dialog to change printing attributes or even cancel the print. Another parameter allows for printing attributes to be specified directly. This can be used either to provide the initial values for the print dialog, or to supply any needed attributes when the dialog is not shown.

  A second `boolean` parameter allows you to specify whether or not to perform printing in an interactive mode. If `true`, a modal progress dialog, with an abort option, is displayed for the duration of printing . This dialog also prevents any user action which may affect the table. However, it can not prevent the table from being modified by code (for example, another thread that posts updates using `SwingUtilities.invokeLater`). It is therefore the responsibility of the developer to ensure that no other code modifies the table in any way during printing (invalid modifications include changes in: size, renderers, or underlying data). Printing behavior is undefined when the table is changed during printing.

  If `false` is specified for this parameter, no dialog will be displayed and printing will begin immediately on the event-dispatch thread. This blocks any other events, including repaints, from being processed until printing is complete. Although this effectively prevents the table from being changed, it doesn't provide a good user experience. For this reason, specifying `false` is only recommended when printing from an application with no visible GUI.

  Note: Attempting to show the printing dialog or run interactively, while in headless mode, will result in a `HeadlessException`.

  Before fetching the printable, this method prepares the table in order to get the most desirable printed result. If the table is currently in an editing mode, it terminates the editing as gracefully as possible. It also ensures that the the table's current selection and focused cell are not indicated in the printed output. This is handled on the view level, and only for the duration of the printing, thus no notification needs to be sent to the selection models.

  See `getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)` for further description on how the table is printed.

  Parameters:
    `printMode` - the printing mode that the printable should use
    `headerFormat` - a `MessageFormat` specifying the text to be used in printing a header, or null for none
    `footerFormat` - a `MessageFormat` specifying the text to be used in printing a footer, or null for none
    `showPrintDialog` - whether or not to display a print dialog
    `attr` - a `PrintRequestAttributeSet` specifying any printing attributes, or null for none
    `interactive` - whether or not to print in an interactive mode
  Returns:
    true, unless printing is cancelled by the user
  Throws:
    `PrinterException` - if an error in the print system causes the job to be aborted
    `HeadlessException` - if the method is asked to show a printing dialog or run interactively, and `GraphicsEnvironment.isHeadless` returns true
  Since:
    1.5
  See Also:
    `getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)`, `GraphicsEnvironment.isHeadless()`

### getPrintable

    public Printable getPrintable(JTable.PrintMode printMode,
                                  MessageFormat headerFormat,
                                  MessageFormat footerFormat)

  Return a `Printable` for use in printing this JTable.

  The `Printable` can be requested in one of two printing modes. In both modes, it spreads table rows naturally in sequence across multiple pages, fitting as many rows as possible per page. `PrintMode.NORMAL` specifies that the table be printed at its current size. In this mode, there may be a need to spread columns across pages in a similar manner to that of the rows. When the need arises, columns are distributed in an order consistent with the table's `ComponentOrientation`. `PrintMode.FIT_WIDTH` specifies that the output be scaled smaller, if necessary, to fit the table's entire width (and thereby all columns) on each page. Width and height are scaled equally, maintaining the aspect ratio of the output.

  The `Printable` heads the portion of table on each page with the appropriate section from the table's `JTableHeader`, if it has one.

  Header and footer text can be added to the output by providing `MessageFormat` arguments. The printing code requests Strings from the formats, providing a single item which may be included in the formatted string: an `Integer` representing the current page number.

  You are encouraged to read the documentation for `MessageFormat` as some characters, such as single-quote, are special and need to be escaped.

  Here's an example of creating a `MessageFormat` that can be used to print "Duke's Table: Page - " and the current page number:

           // notice the escaping of the single quote
           // notice how the page number is included with "{0}"
           MessageFormat format = new MessageFormat("Duke''s Table: Page - {0}");

  The `Printable` constrains what it draws to the printable area of each page that it prints. Under certain circumstances, it may find it impossible to fit all of a page's content into that area. In these cases the output may be clipped, but the implementation makes an effort to do something reasonable. Here are a few situations where this is known to occur, and how they may be handled by this particular implementation:

  - In any mode, when the header or footer text is too wide to fit completely in the printable area -- print as much of the text as possible starting from the beginning, as determined by the table's `ComponentOrientation`.
  - In any mode, when a row is too tall to fit in the printable area -- print the upper-most portion of the row and paint no lower border on the table.
  - In `PrintMode.NORMAL` when a column is too wide to fit in the printable area -- print the center portion of the column and leave the left and right borders off the table.

  It is entirely valid for this `Printable` to be wrapped inside another in order to create complex reports and documents. You may even request that different pages be rendered into different sized printable areas. The implementation must be prepared to handle this (possibly by doing its layout calculations on the fly). However, providing different heights to each page will likely not work well with `PrintMode.NORMAL` when it has to spread columns across pages.

  It is important to note that this `Printable` prints the table at its current visual state, using the table's existing renderers. Before calling this method, you may wish to first modify the state of the table (such as to change the renderers, cancel editing, or hide the selection).

  You must not, however, modify the table in any way after this `Printable` is fetched (invalid modifications include changes in: size, renderers, or underlying data). The behavior of the returned `Printable` is undefined once the table has been changed.

  Here's a simple example that calls this method to fetch a `Printable`, shows a cross-platform print dialog, and then prints the `Printable` unless the user cancels the dialog:

           // prepare the table for printing here first (for example, hide selection)

           // wrap in a try/finally so table can be restored even if something fails
           try {
               // fetch the printable
               Printable printable = table.getPrintable(JTable.PrintMode.FIT_WIDTH,
                                                        new MessageFormat("My Table"),
                                                        new MessageFormat("Page - {0}"));

               // fetch a PrinterJob
               PrinterJob job = PrinterJob.getPrinterJob();

               // set the Printable on the PrinterJob
               job.setPrintable(printable);

               // create an attribute set to store attributes from the print dialog
               PrintRequestAttributeSet attr = new HashPrintRequestAttributeSet();

               // display a print dialog and record whether or not the user cancels it
               boolean printAccepted = job.printDialog(attr);

               // if the user didn't cancel the dialog
               if (printAccepted) {
                   // do the printing (may need to handle PrinterException)
                   job.print(attr);
               }
           } finally {
               // restore the original table state here (for example, restore selection)
           }

  Parameters:
    `printMode` - the printing mode that the printable should use
    `headerFormat` - a `MessageFormat` specifying the text to be used in printing a header, or null for none
    `footerFormat` - a `MessageFormat` specifying the text to be used in printing a footer, or null for none
  Returns:
    a `Printable` for printing this JTable
  Since:
    1.5
  See Also:
    `Printable`, `PrinterJob`

### getAccessibleContext

    public AccessibleContext getAccessibleContext()

  Gets the AccessibleContext associated with this JTable. For tables, the AccessibleContext takes the form of an AccessibleJTable. A new AccessibleJTable instance is created if necessary.

  Specified by:
    `getAccessibleContext` in interface `Accessible`
  Overrides:
    `getAccessibleContext` in class `JComponent`
  Returns:
    an AccessibleJTable that serves as the AccessibleContext of this JTable

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