Converts a Boolean to a boolean handling null. - Java java.lang

Java examples for java.lang:boolean

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Description

Converts a Boolean to a boolean handling null.

Demo Code

/*/*from ww  w . j  a va  2 s  . co m*/
 * 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.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        boolean bool = true;
        boolean valueIfNull = true;
        System.out.println(toBooleanDefaultIfNull(bool, valueIfNull));
    }

    /**
     * <p>Converts a Boolean to a boolean handling <code>null</code>.</p>
     * 
     * <pre>
     *   BooleanUtils.toBooleanDefaultIfNull(Boolean.TRUE, false) = true
     *   BooleanUtils.toBooleanDefaultIfNull(Boolean.FALSE, true) = false
     *   BooleanUtils.toBooleanDefaultIfNull(null, true)          = true
     * </pre>
     *
     * @param bool  the boolean to convert
     * @param valueIfNull  the boolean value to return if <code>null</code>
     * @return <code>true</code> or <code>false</code>
     */
    public static boolean toBooleanDefaultIfNull(Boolean bool,
            boolean valueIfNull) {
        if (bool == null) {
            return valueIfNull;
        }
        return bool.booleanValue() ? true : false;
    }
}

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