Returns the concatenated child text of the specified node. : DOM Element « XML « Java Tutorial

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3. DOM Element

import org.w3c.dom.Element;
import org.w3c.dom.Node;

/*
 * 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.
 */

public class Main {
  
  /**
   * Returns the concatenated child text of the specified node.
   * This method only looks at the immediate children of type
   * <code>Node.TEXT_NODE</code> or the children of any child
   * node that is of type <code>Node.CDATA_SECTION_NODE</code>
   * for the concatenation.
   *
   * @param node The node to look at.
   */
  public static String getChildText(Node node) {
      
      // is there anything to do?
      if (node == null) {
          return null;
      }
      
      // concatenate children text
      StringBuffer str = new StringBuffer();
      Node child = node.getFirstChild();
      while (child != null) {
          short type = child.getNodeType();
          if (type == Node.TEXT_NODE) {
              str.append(child.getNodeValue());
          }
          else if (type == Node.CDATA_SECTION_NODE) {
              str.append(getChildText(child));
          }
          child = child.getNextSibling();
      }
      
      // return text value
      return str.toString();
      
  } // getChildText(Node):String
}