com.jidesoft.comparator

Class BooleanComparator

java.lang.Object

com.jidesoft.comparator.BooleanComparator

All Implemented Interfaces:

java.util.Comparator<java.lang.Object>

public class BooleanComparator
extends java.lang.Object
implements java.util.Comparator<java.lang.Object>

Comparator for boolean type. This is a singleton class. Call getInstance() to get the comparator.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BooleanComparator() Constructor.

Method Summary

Modifier and Type	Method and Description
int	compare(java.lang.Object o1, java.lang.Object o2) Compares two Booleans.
static BooleanComparator	getInstance() Returns BooleanComparator singleton.

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

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

BooleanComparator

protected BooleanComparator()

Constructor.

Has protected access to prevent other clients creating instances of the class ... it is stateless so we need only one instance.

Method Detail

getInstance

public static BooleanComparator getInstance()

Returns BooleanComparator singleton.

Returns:

an instance of BooleanComparator.

compare

public int compare(java.lang.Object o1,
                   java.lang.Object o2)

Compares two Booleans. False is treated as being less than True.

Specified by:

compare in interface java.util.Comparator<java.lang.Object>

Parameters:

o1 - the first object to be compared

o2 - the second object to be compared

Returns:

0 if a and b are equal, -1 if a is less than b, 1 if a is more than b