Package org.apache.commons.collections4.functors

Class ExceptionPredicate<T>

java.lang.Object

org.apache.commons.collections4.functors.ExceptionPredicate<T>

All Implemented Interfaces:

Serializable, Predicate<T>

public final class ExceptionPredicate<T>
extends Object
implements Predicate<T>, Serializable

Predicate implementation that always throws an exception.

Since:

3.0

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final Predicate	INSTANCE	Singleton predicate instance

Method Summary

Modifier and Type	Method	Description
boolean	evaluate(T object)	Evaluates the predicate always throwing an exception.
static <T> Predicate<T>	exceptionPredicate()	Factory returning the singleton instance.

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

public static final Predicate INSTANCE

Singleton predicate instance

Method Details

exceptionPredicate

public static <T> Predicate<T> exceptionPredicate()

Factory returning the singleton instance.

Type Parameters:

T - the object type

Returns:

the singleton instance

Since:

3.1

evaluate

public boolean evaluate(T object)

Evaluates the predicate always throwing an exception.

Specified by:

evaluate in interface Predicate<T>

Parameters:

object - the input object

Returns:

never

Throws:

FunctorException - always