001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache license, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the license for the specific language governing permissions and
015 * limitations under the license.
016 */
017package org.apache.log4j.builders;
018
019import java.util.concurrent.atomic.AtomicReference;
020
021/**
022 * Holds Boolean values created inside of a Lambda expression.
023 *
024 * @deprecated Use {@link AtomicReference}.
025 */
026@Deprecated
027public class BooleanHolder extends Holder<Boolean> {
028
029    public BooleanHolder() {
030        super(Boolean.FALSE);
031    }
032
033    @Override
034    public void set(Boolean value) {
035        if (value != null) {
036            super.set(value);
037        }
038    }
039}