java 解析 这种XML节点

[Eniak]

如题，
遇到这种节点应该怎么解析呢，我的部分代码如下。怎么在这上面改改就能用呢

			for(int i = 0; i < childNodes.getLength(); i++ ){
				Node childNode = childNodes.item(i);
				if( childNode instanceof Element ) {
					System.out.println("the name is "+childNode.getNodeName()+" the value is "+childNode.getFirstChild().getNodeValue());
				}
			}

相应的XML文件，部分

<?xml version="1.0" encoding="UTF-8"?>
<orgdata>
  <participants>
    <participant id="PA-89be9dfd-b389-4550-8170-aba4930abc36">
      <userid>exec_producer</userid>
      <password>bUlBkHMDhGQMFWNZUYdBGwmcoqQ=</password>
      <firstname>Alan</firstname>
      <lastname>Lee (executive producer)</lastname>
      <description />
      <notes />
      <isAdministrator>false</isAdministrator>
      <isAvailable>true</isAvailable>
      <roles>
        <role>RO-55ed22a1-b494-42b7-9103-c16ce4f9b46d</role>
      </roles>
      <positions />
      <capabilities />
      <privileges>00000000</privileges>
    </participant>
    <participant id="PA-b7a79138-158d-4fce-b875-61029bb85431">
      <userid>prod-coordinator</userid>

[musiclee]

http://jueforever.javaeye.com/blog/359162
以前学的东西都快忘光了 呵呵。。

[fashi1000]

if( childNode instanceof Element && childNode.hasChildNodes ) {