怎样才能用URL类 打开一个网页呢?

Question

URl u=new URL("http://www.163.com");

Answer 1

import java.net.*;
import java.io.*;/**
*打开一个网页,并把内容保存在test.html里面
*@author: Eastsun
*/
public class ReadURL{
    public static void main(String[] args){
        URL url  =null;
        BufferedReader reader =null;
        FileWriter     writer =null;
        try{
            url = new URL("http://eastsun.javaeye.com");
            reader =new BufferedReader(new InputStreamReader(url.openStream()));
            writer =new FileWriter(new File("test.html"));
            String line =null;
            while((line =reader.readLine())!=null) writer.append(line);
        }catch(IOException e){
            e.printStackTrace();
        }finally{
            try{
                if(reader!=null) reader.close();
                if(writer!=null) writer.close();
            }catch(IOException ex){
                System.out.println(ex);
            }
        }
    }
}

Answer 2

Java 6 里的方法if (Desktop.isDesktopSupported()) {
                Desktop desktop = Desktop.getDesktop();
                try {
                    URI uri = new URI("http://www.163.com");
                    desktop.browse(uri);
                } catch (IOException ex) {
                    ex.printStackTrace();
                } catch (URISyntaxException ex) {
                    ex.printStackTrace();
                }
            }