## org.jfree.data
Class DefaultKeyedValue

    java.lang.Object
      org.jfree.data.DefaultKeyedValue

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable, KeyedValue, Value, org.jfree.util.PublicCloneable

    public class DefaultKeyedValue

extends java.lang.Object
implements KeyedValue, java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable

A (key, value) pair. This class provides a default implementation of the `KeyedValue` interface.

See Also:
  Serialized Form

Constructor Summary
`DefaultKeyedValue(java.lang.Comparable key, java.lang.Number value)` Creates a new (key, value) item.

Method Summary
`java.lang.Object` `clone()` Returns a clone.
`boolean` `equals(java.lang.Object obj)` Tests this key-value pair for equality with an arbitrary object.
`java.lang.Comparable` `getKey()` Returns the key.
`java.lang.Number` `getValue()` Returns the value.
`int` `hashCode()` Returns a hash code.
`void` `setValue(java.lang.Number value)` Sets the value.
`java.lang.String` `toString()` Returns a string representing this instance, primarily useful for debugging.

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

Constructor Detail

### DefaultKeyedValue

    public DefaultKeyedValue(java.lang.Comparable key,
                             java.lang.Number value)

  Creates a new (key, value) item.

  Parameters:
    `key` - the key (should be immutable).
    `value` - the value (`null` permitted).

Method Detail

### getKey

    public java.lang.Comparable getKey()

  Returns the key.

  Specified by:
    `getKey` in interface `KeyedValue`
  Returns:
    The key.

### getValue

    public java.lang.Number getValue()

  Returns the value.

  Specified by:
    `getValue` in interface `Value`
  Returns:
    The value (possibly `null`).

### setValue

    public void setValue(java.lang.Number value)

  Sets the value.

  Parameters:
    `value` - the value (`null` permitted).

### equals

    public boolean equals(java.lang.Object obj)

  Tests this key-value pair for equality with an arbitrary object.

  Overrides:
    `equals` in class `java.lang.Object`
  Parameters:
    `obj` - the object (`null` permitted).
  Returns:
    A boolean.

### hashCode

    public int hashCode()

  Returns a hash code.

  Overrides:
    `hashCode` in class `java.lang.Object`
  Returns:
    A hash code.

### clone

    public java.lang.Object clone()
                           throws java.lang.CloneNotSupportedException

  Returns a clone. It is assumed that both the key and value are immutable objects, so only the references are cloned, not the objects themselves.

  Specified by:
    `clone` in interface `org.jfree.util.PublicCloneable`
  Overrides:
    `clone` in class `java.lang.Object`
  Returns:
    A clone.
  Throws:
    `java.lang.CloneNotSupportedException` - Not thrown by this class, but subclasses (if any) might.

### toString

    public java.lang.String toString()

  Returns a string representing this instance, primarily useful for debugging.

  Overrides:
    `toString` in class `java.lang.Object`
  Returns:
    A string.