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
private static final long	serialVersionUID	Serial version UID

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ExceptionPredicate()	Restricted constructor.

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.
private Object	readResolve()

Methods inherited from class java.lang.Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

Serial version UID

See Also:

• Constant Field Values

INSTANCE

public static final Predicate INSTANCE

Singleton predicate instance

Constructor Details

ExceptionPredicate

private ExceptionPredicate()

Restricted constructor.

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

readResolve

private Object readResolve()