Package org.apache.commons.collections4.functors

Class ExceptionPredicate<T>

java.lang.Object

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

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

Type Parameters:

T - the type of the input to the predicate.

All Implemented Interfaces:

Serializable, Predicate<T>, Predicate<T>

public final class ExceptionPredicate<T>
extends AbstractPredicate<T>
implements 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
static <T> Predicate<T>	exceptionPredicate()	Factory returning the singleton instance.
boolean	test(T object)	Evaluates the predicate always throwing an exception.

Methods inherited from class org.apache.commons.collections4.functors.AbstractPredicate

evaluate

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Predicate

and, negate, or

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

test

public boolean test(T object)

Evaluates the predicate always throwing an exception.

Specified by:

test in interface Predicate<T>

Specified by:

test in interface Predicate<T>

Parameters:

object - the input object

Returns:

never

Throws:

FunctorException - always