Package org.jfree.data

Class KeyedValueComparator

java.lang.Object

org.jfree.data.KeyedValueComparator

All Implemented Interfaces:

Serializable, Comparator

public class KeyedValueComparator
extends Object
implements Comparator, Serializable

A utility class that can compare and order two KeyedValue instances and sort them into ascending or descending order by key or by value.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
KeyedValueComparator(KeyedValueComparatorType type, SortOrder order)	Creates a new comparator.

Method Summary

Modifier and Type	Method	Description
int	compare(Object o1, Object o2)	Compares two KeyedValue instances and returns an int that indicates the relative order of the two objects.
SortOrder	getOrder()	Returns the sort order.
KeyedValueComparatorType	getType()	Returns the type.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

KeyedValueComparator

public KeyedValueComparator(KeyedValueComparatorType type,
 SortOrder order)

Creates a new comparator.

Parameters:

type - the type (BY_KEY or BY_VALUE, null not permitted).

order - the order (null not permitted).

Method Details

getType

public KeyedValueComparatorType getType()

Returns the type.

Returns:

The type (never null).

getOrder

public SortOrder getOrder()

Returns the sort order.

Returns:

The sort order (never null).

compare

public int compare(Object o1,
 Object o2)

Compares two KeyedValue instances and returns an int that indicates the relative order of the two objects.

Specified by:

compare in interface Comparator

Parameters:

o1 - object 1.

o2 - object 2.

Returns:

An int indicating the relative order of the objects.