| /* |
| * Copyright 2001-2004 The Apache Software Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.collections.functors; |
| |
| import java.io.Serializable; |
| |
| import org.apache.commons.collections.Predicate; |
| |
| /** |
| * Predicate implementation that always returns false. |
| * |
| * @since Commons Collections 3.0 |
| * @version $Revision: 1.1 $ $Date: 2009/05/27 22:16:33 $ |
| * |
| * @author Stephen Colebourne |
| */ |
| public final class FalsePredicate implements Predicate, Serializable { |
| |
| /** Serial version UID */ |
| private static final long serialVersionUID = 7533784454832764388L; |
| |
| /** Singleton predicate instance */ |
| public static final Predicate INSTANCE = new FalsePredicate(); |
| |
| /** |
| * Factory returning the singleton instance. |
| * |
| * @return the singleton instance |
| * @since Commons Collections 3.1 |
| */ |
| public static Predicate getInstance() { |
| return INSTANCE; |
| } |
| |
| /** |
| * Restricted constructor. |
| */ |
| private FalsePredicate() { |
| super(); |
| } |
| |
| /** |
| * Evaluates the predicate returning false always. |
| * |
| * @param object the input object |
| * @return false always |
| */ |
| public boolean evaluate(Object object) { |
| return false; |
| } |
| |
| } |