NotNullPredicate (Commons Collections 4.0-alpha1 API)

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org.apache.commons.collections4.functors
Class NotNullPredicate<T>

java.lang.Object
  org.apache.commons.collections4.functors.NotNullPredicate<T>

All Implemented Interfaces:: Serializable, Predicate<T>

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

Predicate implementation that returns true if the input is not null.

Since:: 3.0
Version:: $Id: NotNullPredicate.java 1469004 2013-04-17 17:37:03Z tn $
See Also:: Serialized Form

Field Summary
`static Predicate<Object>`	`INSTANCE` Singleton predicate instance

Method Summary

boolean evaluate(T object)
Evaluates the predicate returning true if the object does not equal null.

static



<T> Predicate<T>

notNullPredicate()
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<Object> INSTANCE

Singleton predicate instance

Method Detail

notNullPredicate

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

Factory returning the singleton instance.

Type Parameters:: T - the type that the predicate queries
Returns:: the singleton instance
Since:: 3.1

evaluate

public boolean evaluate(T object)

Evaluates the predicate returning true if the object does not equal null.

Specified by:: evaluate in interface Predicate<T>

Parameters:: object - the object to evaluate
Returns:: true if not null