sax解析xml文档

import org.xml.sax.*;
import org.xml.sax.helpers.*;
import javax.xml.parsers.*;
import java.util.Stack;

public class saxJava extends DefaultHandler {
	  //将数据保存在Stack中	
      Stack tags = new Stack();
      
      public saxJava() {
      	super();
	  }

      public static void main(String args[]) {
		//当前时间，单位毫秒
	    long lasting = System.currentTimeMillis();
	    
	    try {
	    	//创建解析工厂
			SAXParserFactory sf = SAXParserFactory.newInstance();
			//得到解析器
			SAXParser sp = sf.newSAXParser();
			//设置内容处理器
		    saxJava reader = new saxJava();
		    //
			sp.parse(new InputSource("a.xml"), reader);
		}catch (Exception e) {
			e.printStackTrace();
		}
		
		System.out.println("运行时间：" + (System.currentTimeMillis() - lasting) + "毫秒");
	}
		public void characters(char ch[], int start, int length) throws SAXException {
			String tag = (String) tags.peek();
			if (tag.equals("code")) {
		  		System.out.print(new String(ch, start, length));
			}
			if (tag.equals("pass")) {
		  		System.out.print(new String(ch, start, length));
			}
			if (tag.equals("name")) {
				System.out.print(new String(ch, start, length));
			}
			if (tag.equals("money")) {
		  		System.out.print(new String(ch, start, length));
			}		
		}
	
		public void startElement(String uri,String localName,String qName,Attributes attrs){
	   		tags.push(qName);
		}
		
	
} 

xml文档是我copy过来的！！！！

xml文档（a.xml）内容：

<?xml version="1.0" encoding="gbk"?>      
<Accounts>
<Account type="by0003"> 
<code>100001</code>
<pass>123</pass>
<name>李四</name> 
<money>1000000.00</money> 
</Account> 
<Account type="hz0001"> 
<code>100002</code>
<pass>123</pass>
<name>张三</name> 
<money>1000.00</money> 
</Account> 
</Accounts>