例11-2.txt

这是一本java基础教程 对新手上路有很大帮助

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
public class Example11_2{
    public static void main(String args[]){
        new WinOne();
    }
}
class WinOne extends JFrame implements ActionListener,Runnable{
    JButton button;
    URL url;
    JTextField text;
    JEditorPane editPane; 
    byte b[]=new byte[118];
    Thread thread;
    public WinOne(){
       text=new JTextField(20);
       editPane=new JEditorPane();
       editPane.setEditable(false);
       button=new JButton("确定");
       button.addActionListener(this);
       thread=new Thread(this);
       JPanel p=new JPanel();
       p.add(new JLabel("输入网址:"));
       p.add(text); 
       p.add(button);
       Container con=getContentPane();
       con.add(new JScrollPane(editPane),BorderLayout.CENTER);
       con.add(p,BorderLayout.NORTH);
       setBounds(60,60,360,300);
       setVisible(true);
       validate();
       setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    public void actionPerformed(ActionEvent e){
       if(!(thread.isAlive())) 
           thread=new Thread(this);
       try{  thread.start();
       }
       catch(Exception ee){
            text.setText("我正在读取"+url);
       }
    }
    public void run(){
       try {  int n=-1;
             editPane.setText(null);
             url=new URL(text.getText().trim());
             editPane.setPage(url);
       }
       catch(MalformedURLException e1){
             text.setText(""+e1);
             return;
       }
       catch(IOException e1){
             text.setText(""+e1);
             return;
       }  
    }
}