Package org.apache.commons.collections.functors

Class ExceptionPredicate

java.lang.Object

org.apache.commons.collections.functors.ExceptionPredicate

All Implemented Interfaces:

java.io.Serializable, Predicate

public final class ExceptionPredicate
extends java.lang.Object
implements Predicate, java.io.Serializable

Predicate implementation that always throws an exception.

Since:

Commons Collections 3.0

Version:

$Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $

Author:

Stephen Colebourne

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static Predicate	INSTANCE	Singleton predicate instance

Method Summary

Modifier and Type	Method	Description
boolean	evaluate(java.lang.Object object)	Evaluates the predicate always throwing an exception.
static Predicate	getInstance()	Factory returning the singleton instance.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final Predicate INSTANCE

Singleton predicate instance

Method Detail

getInstance

public static Predicate getInstance()

Factory returning the singleton instance.

Returns:

the singleton instance

Since:

Commons Collections 3.1

evaluate

public boolean evaluate(java.lang.Object object)

Evaluates the predicate always throwing an exception.

Specified by:

evaluate in interface Predicate

Parameters:

object - the input object

Returns:

never

Throws:

FunctorException - always