import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.net.*;

public class Browser extends JFrame {

   private JTextField tf = new JTextField("https://people.dsv.su.se/~pierre/i/i.cgi?href=aa_public/home/main.txt");
   private JTextArea ta = new JTextArea();

   public static void main(String[] args) {
      new Browser();
   }

   public Browser() {
      setDefaultCloseOperation(EXIT_ON_CLOSE);
      tf.setColumns(40);
      tf.addActionListener(new L());
      JPanel p = new JPanel();     
      p.setLayout(new FlowLayout());
      p.add(tf);

      getContentPane().add("North", p);
      getContentPane().add("Center", new JScrollPane(ta));

      setSize(640, 400);
      setVisible(true);
      getPageFromNet();
   }

   private void getPageFromNet() {
      String url = tf.getText();
      StringBuffer buf = new StringBuffer();      
      try {
         String str = "";
         URL u = new URL(url);
         BufferedReader br = new BufferedReader(new InputStreamReader(u.openStream()));
         while((str = br.readLine()) != null){
            buf.append(str + "\n");
         }

         ta.setText(buf.toString());
      } catch(IOException e) {
         ta.setText("Error occured!");
      }
   }

   class L implements ActionListener {
      public void actionPerformed(ActionEvent ae) {
         getPageFromNet();
         Toolkit.getDefaultToolkit().beep();
      }
   }
}