// A Simple GUI program
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Gui extends JFrame {
   private JTextField enter;
   private JTextArea display;

   public Gui()
   {
      super( "GUI" );

      Container c = getContentPane();

      enter = new JTextField();
      enter.setEnabled( true );
      enter.addActionListener(
         new ActionListener() {
            public void actionPerformed( ActionEvent e )
            {
               WriteData( e.getActionCommand() );
            }
         }
      );
      c.add( enter, BorderLayout.NORTH );

      display = new JTextArea();
      c.add( new JScrollPane( display ),
             BorderLayout.CENTER );

      setSize( 300, 150 );
      show();
   }

   public void runGui() 
   {
      do {
      }while (true);
   }

   private void WriteData( String s )
   {
      display.append( "\nTyped>>>" + s ); // write to the TextArea
      enter.setText(""); //Clear the TextField
   }

   public static void main( String args[] )
   {
      Gui app = new Gui();
      // The following listener responds to the close event on the window
      app.addWindowListener(
         new WindowAdapter() {
            public void windowClosing( WindowEvent e )
            {
               System.exit( 0 );
            }
         }
      );
      app.runGui();
   }
}