org.apache.commons.collections.functors
Class NotNullPredicate
java.lang.Object
|
+--org.apache.commons.collections.functors.NotNullPredicate
- All Implemented Interfaces:
- Predicate, Serializable
- public final class NotNullPredicate
- extends Object
- implements Predicate, Serializable
Predicate implementation that returns true if the input is not null.
- Since:
- Commons Collections 3.0
- Version:
- $Revision: 1.2 $ $Date: 2004/01/14 21:43:09 $
- Author:
- Stephen Colebourne
- See Also:
- Serialized Form
Method Summary |
boolean |
evaluate(Object object)
Return true if the object equals null. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
INSTANCE
public static final Predicate INSTANCE
- Singleton predicate instance
evaluate
public boolean evaluate(Object object)
- Return true if the object equals null.
- Specified by:
evaluate
in interface Predicate
- Following copied from interface:
org.apache.commons.collections.Predicate
- Parameters:
object
- the object to evaluate- Returns:
- true or false
- Throws:
ClassCastException
- (runtime) if the input is the wrong classIllegalArgumentException
- (runtime) if the input is invalidFunctorException
- (runtime) if the predicate encounters a problem
Copyright © 2001-2004 Apache Software Foundation. All Rights Reserved.