com.feilong.lib.collection4.functors.FalsePredicate Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of feilong Show documentation
Show all versions of feilong Show documentation
feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 com.feilong.lib.collection4.functors;
import java.io.Serializable;
import org.apache.commons.collections4.Predicate;
/**
* Predicate implementation that always returns false.
*
* @param
*
* @since 3.0
*/
public final class FalsePredicate implements Predicate,Serializable{
/** Serial version UID */
private static final long serialVersionUID = 7533784454832764388L;
/** Singleton predicate instance */
@SuppressWarnings("rawtypes") // the static instance works for all types
public static final Predicate INSTANCE = new FalsePredicate<>();
/**
* Get a typed instance.
*
* @param
* the type that the predicate queries
* @return the singleton instance
* @since 4.0
*/
public static Predicate falsePredicate(){
return INSTANCE;
}
/**
* Restricted constructor.
*/
private FalsePredicate(){
super();
}
/**
* Evaluates the predicate returning false always.
*
* @param object
* the input object
* @return false always
*/
@Override
public boolean evaluate(final T object){
return false;
}
private Object readResolve(){
return INSTANCE;
}
}