JDOM XMLファイルの例プログラムを読み込みます。

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How To Read XML File In Java–（JDOM Paser）
Posted on December 21,2009 ,     Last modified：August 4、2011
By  mkyong
JDOM is，quite simply，a Java representation of an XML document.JDOM provides a way to represent that document for easy and efficient reading，maniulation，and writitititing.It has a strate forward API，prorepresent the lightrand。although it integrates well with both DOM and SAX.
JDOM、Java XML parser、is more user friendly in the way of accessing the XML document.
In this example，we show you how to use JDOM to read a XML file，and print out each element ordery.
1.Download the JDOM library
JDOM is not like SAX or DOM、which bundled in JDK.To use JDOM、you need to download the library manualy.
Get JDOM from JDOM offical site or declares following dependency if you are using Maven.

<dependency>
	<groupId>jdom</groupId>
	<artifactId>jdom</artifactId>
	<version>1.1</version>
</dependency>

2.XML File
XML file as followwing

<?xml version="1.0"?>
<company>
	<staff>
		<firstname>yong</firstname>
		<lastname>mook kim</lastname>
		<nickname>mkyong</nickname>
		<salary>100000</salary>
	</staff>
	<staff>
		<firstname>low</firstname>
		<lastname>yin fong</lastname>
		<nickname>fong fong</nickname>
		<salary>200000</salary>
	</staff>
</company>

3.Java File
Use JDOM parser to parse above XML file.

import java.io.File;
import java.io.IOException;
import java.util.List;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
 
public class ReadXMLFile {
	public static void main(String[] args) {
 
	  SAXBuilder builder = new SAXBuilder();
	  File xmlFile = new File("c:\\file.xml");
 
	  try {
 
		Document document = (Document) builder.build(xmlFile);
		Element rootNode = document.getRootElement();
		List list = rootNode.getChildren("staff");
 
		for (int i = 0; i < list.size(); i++) {
 
		   Element node = (Element) list.get(i);
 
		   System.out.println("First Name : " + node.getChildText("firstname"));
		   System.out.println("Last Name : " + node.getChildText("lastname"));
		   System.out.println("Nick Name : " + node.getChildText("nickname"));
		   System.out.println("Salary : " + node.getChildText("salary"));
 
		}
 
	  } catch (IOException io) {
		System.out.println(io.getMessage());
	  } catch (JDOMException jdomex) {
		System.out.println(jdomex.getMessage());
	  }
	}
}

Output

First Name : yong
Last Name : mook kim
Nick Name : mkyong
Salary : 100000
First Name : low
Last Name : yin fong
Nick Name : fong fong
Salary : 200000

ノート
You may also the follwing two examples：
How to read XML file in Java–How to read XML file in Java–