## org.apache.jasper.runtime
Class BodyContentImpl

    java.lang.Object
      java.io.Writer
          javax.servlet.jsp.JspWriter
              javax.servlet.jsp.tagext.BodyContent
                  org.apache.jasper.runtime.BodyContentImpl

All Implemented Interfaces:
  Closeable, Flushable, Appendable

    public class BodyContentImpl

extends BodyContent

Write text to a character-output stream, buffering characters so as to provide for the efficient writing of single characters, arrays, and strings. Provide support for discarding for the output that has been buffered.

Author:
  Rajiv Mordani, Jan Luehe

Field Summary

Fields inherited from class javax.servlet.jsp.JspWriter
`autoFlush, bufferSize, DEFAULT_BUFFER, NO_BUFFER, UNBOUNDED_BUFFER`

Fields inherited from class java.io.Writer
`lock`

Constructor Summary
`BodyContentImpl(JspWriter enclosingWriter)` Constructor.

Method Summary
`void` `clear()` Clear the contents of the buffer.
`void` `clearBuffer()` Clears the current contents of the buffer.
`void` `close()` Close the stream, flushing it first.
`Reader` `getReader()` Return the value of this BodyJspWriter as a Reader.
`int` `getRemaining()` This method returns the number of unused bytes in the buffer.
`String` `getString()` Return the value of the BodyJspWriter as a String.
`static void` `main(String[] args)`
`void` `newLine()` Write a line separator.
`void` `print(boolean b)` Print a boolean value.
`void` `print(char c)` Print a character.
`void` `print(char[] s)` Print an array of characters.
`void` `print(double d)` Print a double-precision floating-point number.
`void` `print(float f)` Print a floating-point number.
`void` `print(int i)` Print an integer.
`void` `print(long l)` Print a long integer.
`void` `print(Object obj)` Print an object.
`void` `print(String s)` Print a string.
`void` `println()` Terminate the current line by writing the line separator string.
`void` `println(boolean x)` Print a boolean value and then terminate the line.
`void` `println(char x)` Print a character and then terminate the line.
`void` `println(char[] x)` Print an array of characters and then terminate the line.
`void` `println(double x)` Print a double-precision floating-point number and then terminate the line.
`void` `println(float x)` Print a floating-point number and then terminate the line.
`void` `println(int x)` Print an integer and then terminate the line.
`void` `println(long x)` Print a long integer and then terminate the line.
`void` `println(Object x)` Print an Object and then terminate the line.
`void` `println(String x)` Print a String and then terminate the line.
`void` `write(char[] buf)` Write an array of characters.
`void` `write(char[] cbuf, int off, int len)` Write a portion of an array of characters.
`void` `write(int c)` Write a single character.
`void` `write(String s)` Write a string.
`void` `write(String s, int off, int len)` Write a portion of a String.
`void` `writeOut(Writer out)` Write the contents of this BodyJspWriter into a Writer.

Methods inherited from class javax.servlet.jsp.tagext.BodyContent
`clearBody, flush, getEnclosingWriter`

Methods inherited from class javax.servlet.jsp.JspWriter
`getBufferSize, isAutoFlush`

Methods inherited from class java.io.Writer
`append, append, append`

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

Constructor Detail

### BodyContentImpl

    public BodyContentImpl(JspWriter enclosingWriter)

  Constructor.

Method Detail

### write

    public void write(int c)
               throws IOException

  Write a single character.

  Overrides:
    `write` in class `Writer`
  Throws:
    `IOException`

### write

    public void write(char[] cbuf,
                      int off,
                      int len)
               throws IOException

  Write a portion of an array of characters.

  Ordinarily this method stores characters from the given array into this stream's buffer, flushing the buffer to the underlying stream as needed. If the requested length is at least as large as the buffer, however, then this method will flush the buffer and write the characters directly to the underlying stream. Thus redundant `DiscardableBufferedWriter`s will not copy data unnecessarily.

  Specified by:
    `write` in class `Writer`
  Parameters:
    `cbuf` - A character array
    `off` - Offset from which to start reading characters
    `len` - Number of characters to write
  Throws:
    `IOException`

### write

    public void write(char[] buf)
               throws IOException

  Write an array of characters. This method cannot be inherited from the Writer class because it must suppress I/O exceptions.

  Overrides:
    `write` in class `Writer`
  Throws:
    `IOException`

### write

    public void write(String s,
                      int off,
                      int len)
               throws IOException

  Write a portion of a String.

  Overrides:
    `write` in class `Writer`
  Parameters:
    `s` - String to be written
    `off` - Offset from which to start reading characters
    `len` - Number of characters to be written
  Throws:
    `IOException`

### write

    public void write(String s)
               throws IOException

  Write a string. This method cannot be inherited from the Writer class because it must suppress I/O exceptions.

  Overrides:
    `write` in class `Writer`
  Throws:
    `IOException`

### newLine

    public void newLine()
                 throws IOException

  Write a line separator. The line separator string is defined by the system property `line.separator`, and is not necessarily a single newline ('\n') character.

  Specified by:
    `newLine` in class `JspWriter`
  Throws:
    `IOException` - If an I/O error occurs

### print

    public void print(boolean b)
               throws IOException

  Print a boolean value. The string produced by ``String.valueOf(boolean)`` is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the ``write(int)`` method.

  Specified by:
    `print` in class `JspWriter`
  Parameters:
    `b` - The `boolean` to be printed
  Throws:
    `IOException`

### print

    public void print(char c)
               throws IOException

  Print a character. The character is translated into one or more bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the ``write(int)`` method.

  Specified by:
    `print` in class `JspWriter`
  Parameters:
    `c` - The `char` to be printed
  Throws:
    `IOException`

### print

    public void print(int i)
               throws IOException

  Print an integer. The string produced by ``String.valueOf(int)`` is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the ``write(int)`` method.

  Specified by:
    `print` in class `JspWriter`
  Parameters:
    `i` - The `int` to be printed
  Throws:
    `IOException`
  See Also:
    `Integer.toString(int)`

### print

    public void print(long l)
               throws IOException

  Print a long integer. The string produced by ``String.valueOf(long)`` is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the ``write(int)`` method.

  Specified by:
    `print` in class `JspWriter`
  Parameters:
    `l` - The `long` to be printed
  Throws:
    `IOException`
  See Also:
    `Long.toString(long)`

### print

    public void print(float f)
               throws IOException

  Print a floating-point number. The string produced by ``String.valueOf(float)`` is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the ``write(int)`` method.

  Specified by:
    `print` in class `JspWriter`
  Parameters:
    `f` - The `float` to be printed
  Throws:
    `IOException`
  See Also:
    `Float.toString(float)`

### print

    public void print(double d)
               throws IOException

  Print a double-precision floating-point number. The string produced by ``String.valueOf(double)`` is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the ``write(int)`` method.

  Specified by:
    `print` in class `JspWriter`
  Parameters:
    `d` - The `double` to be printed
  Throws:
    `IOException`
  See Also:
    `Double.toString(double)`

### print

    public void print(char[] s)
               throws IOException

  Print an array of characters. The characters are converted into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the ``write(int)`` method.

  Specified by:
    `print` in class `JspWriter`
  Parameters:
    `s` - The array of chars to be printed
  Throws:
    `NullPointerException` - If `s` is `null`
    `IOException`

### print

    public void print(String s)
               throws IOException

  Print a string. If the argument is `null` then the string `"null"` is printed. Otherwise, the string's characters are converted into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the ``write(int)`` method.

  Specified by:
    `print` in class `JspWriter`
  Parameters:
    `s` - The `String` to be printed
  Throws:
    `IOException`

### print

    public void print(Object obj)
               throws IOException

  Print an object. The string produced by the ``String.valueOf(Object)`` method is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the ``write(int)`` method.

  Specified by:
    `print` in class `JspWriter`
  Parameters:
    `obj` - The `Object` to be printed
  Throws:
    `IOException`
  See Also:
    `Object.toString()`

### println

    public void println()
                 throws IOException

  Terminate the current line by writing the line separator string. The line separator string is defined by the system property `line.separator`, and is not necessarily a single newline character (`'\n'`).

  Specified by:
    `println` in class `JspWriter`
  Throws:
    `IOException`

### println

    public void println(boolean x)
                 throws IOException

  Print a boolean value and then terminate the line. This method behaves as though it invokes ``print(boolean)`` and then ``println()``.

  Specified by:
    `println` in class `JspWriter`
  Parameters:
    `x` - the boolean to write
  Throws:
    `IOException`

### println

    public void println(char x)
                 throws IOException

  Print a character and then terminate the line. This method behaves as though it invokes ``print(char)`` and then ``println()``.

  Specified by:
    `println` in class `JspWriter`
  Parameters:
    `x` - the char to write
  Throws:
    `IOException`

### println

    public void println(int x)
                 throws IOException

  Print an integer and then terminate the line. This method behaves as though it invokes ``print(int)`` and then ``println()``.

  Specified by:
    `println` in class `JspWriter`
  Parameters:
    `x` - the int to write
  Throws:
    `IOException`

### println

    public void println(long x)
                 throws IOException

  Print a long integer and then terminate the line. This method behaves as though it invokes ``print(long)`` and then ``println()``.

  Specified by:
    `println` in class `JspWriter`
  Parameters:
    `x` - the long to write
  Throws:
    `IOException`

### println

    public void println(float x)
                 throws IOException

  Print a floating-point number and then terminate the line. This method behaves as though it invokes ``print(float)`` and then ``println()``.

  Specified by:
    `println` in class `JspWriter`
  Parameters:
    `x` - the float to write
  Throws:
    `IOException`

### println

    public void println(double x)
                 throws IOException

  Print a double-precision floating-point number and then terminate the line. This method behaves as though it invokes ``print(double)`` and then ``println()``.

  Specified by:
    `println` in class `JspWriter`
  Parameters:
    `x` - the double to write
  Throws:
    `IOException`

### println

    public void println(char[] x)
                 throws IOException

  Print an array of characters and then terminate the line. This method behaves as though it invokes ``print(char[])`` and then ``println()``.

  Specified by:
    `println` in class `JspWriter`
  Parameters:
    `x` - the char[] to write
  Throws:
    `IOException`

### println

    public void println(String x)
                 throws IOException

  Print a String and then terminate the line. This method behaves as though it invokes ``print(String)`` and then ``println()``.

  Specified by:
    `println` in class `JspWriter`
  Parameters:
    `x` - the String to write
  Throws:
    `IOException`

### println

    public void println(Object x)
                 throws IOException

  Print an Object and then terminate the line. This method behaves as though it invokes ``print(Object)`` and then ``println()``.

  Specified by:
    `println` in class `JspWriter`
  Parameters:
    `x` - the Object to write
  Throws:
    `IOException`

### clear

    public void clear()
               throws IOException

  Clear the contents of the buffer. If the buffer has been already been flushed then the clear operation shall throw an IOException to signal the fact that some data has already been irrevocably written to the client response stream.

  Specified by:
    `clear` in class `JspWriter`
  Throws:
    `IOException` - If an I/O error occurs

### clearBuffer

    public void clearBuffer()
                     throws IOException

  Clears the current contents of the buffer. Unlike clear(), this mehtod will not throw an IOException if the buffer has already been flushed. It merely clears the current content of the buffer and returns.

  Specified by:
    `clearBuffer` in class `JspWriter`
  Throws:
    `IOException` - If an I/O error occurs

### close

    public void close()
               throws IOException

  Close the stream, flushing it first. Once a stream has been closed, further write() or flush() invocations will cause an IOException to be thrown. Closing a previously-closed stream, however, has no effect.

  Specified by:
    `close` in interface `Closeable`
  Specified by:
    `close` in class `JspWriter`
  Throws:
    `IOException` - If an I/O error occurs

### getRemaining

    public int getRemaining()

  Description copied from class: `JspWriter`
  This method returns the number of unused bytes in the buffer.

  Specified by:
    `getRemaining` in class `JspWriter`
  Returns:
    the number of bytes unused in the buffer

### getReader

    public Reader getReader()

  Return the value of this BodyJspWriter as a Reader. Note: this is after evaluation!! There are no scriptlets, etc in this stream.

  Specified by:
    `getReader` in class `BodyContent`
  Returns:
    the value of this BodyJspWriter as a Reader

### getString

    public String getString()

  Return the value of the BodyJspWriter as a String. Note: this is after evaluation!! There are no scriptlets, etc in this stream.

  Specified by:
    `getString` in class `BodyContent`
  Returns:
    the value of the BodyJspWriter as a String

### writeOut

    public void writeOut(Writer out)
                  throws IOException

  Write the contents of this BodyJspWriter into a Writer. Subclasses are likely to do interesting things with the implementation so some things are extra efficient.

  Specified by:
    `writeOut` in class `BodyContent`
  Parameters:
    `out` - The writer into which to place the contents of this body evaluation
  Throws:
    `IOException` - if an I/O error occurred while writing the contents of this BodyContent to the given Writer

### main

    public static void main(String[] args)
                     throws Exception

  Throws:
    `Exception`

Copyright © 2007 Mort Bay Consulting. All Rights Reserved.