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

Constructors

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

Method Summary

Modifier and Type	Method and Description
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, null not permitted).

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 (never null).

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.