Grundgerüst des ButtonQuitter Programms

import java.awt.*;

import java.awt..*;

import .swing.*;

public class ButtonQuitter extends  implements 

{
  JButton bQuit = new JButton("Klick hier für Exit");

  public ButtonQuitter(String title)
  {
    super(title);

    ( new FlowLayout() );

    bQuit.( this );

    ( bQuit );
  }

  public void ( ActionEvent evt)
  {
    System.exit( 0 );
  }

  public static void main ( String[] args )
  {
    ButtonQuitter frame = new ButtonQuitter("Button Quitter");

    frame.setSize( 200, 100 );

    frame.( true );

  }
}