JAVA grabs an HTML source code

package com.hyq.src;
import java.io.InputStream;
import java.net.URL;
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
try{
Test.testNetStream();
}catch(Exception e){
e.printStackTrace();
}
} 
public static void testNetStream()throws Exception{
URL url=new URL("http://www.imust.cn/");
InputStream in=url.openStream();
byte[] b=new byte[100000];
in.read(b);
in.close();
String s=new String(b);
System.out.println(s);
}
}

package com.hyq.src;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
public class Test {
public static void main(String[] args)
{
System.out.println(Test.getHtmlSource("http://sports.163.com/zc/"));
}
public static String getHtmlSource(String url){
StringBuffer stb=new StringBuffer();
try{
URLConnection uc=new URL(url).openConnection();
BufferedReader br=new BufferedReader(new InputStreamReader(uc.getInputStream(),"gb2312"));
String temp=null;
while((temp=br.readLine())!=null){
stb.append(temp).append("\n");
}
br.close();
}catch(Exception e){
e.printStackTrace();
}
return stb.toString();
}
}