Converts a Boolean to a boolean handling null

     
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 * 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
 * 
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 * 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
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 */

/**
 * <p>Operations on boolean primitives and Boolean objects.</p>
 *
 * <p>This class tries to handle <code>null</code> input gracefully.
 * An exception will not be thrown for a <code>null</code> input.
 * Each method documents its behaviour in more detail.</p>
 * 
 * @author Stephen Colebourne
 * @author Matthew Hawthorne
 * @author Gary Gregory
 * @since 2.0
 * @version $Id: BooleanUtils.java 589050 2007-10-27 05:07:45Z bayard $
 */
public class Main {
  
  /**
   * <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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Converts a Boolean to a boolean handling null : boolean « Data Type « Java

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