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

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

Since:

3.0

See Also:

Serialized Form

Field Summary

Fields

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

Method Summary

Modifier and Type	Method and Description
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 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