Skeleton of the ButtonQuitter Program

import java.awt.*;
import java.awt..*; 
import .swing.*; 

public class ButtonQuitter extends  implements 
{
  JButton bQuit = new JButton("Click here to Exit"); 

  public ButtonQuitter()  
  {
    getContentPane().( new FlowLayout() );
    bQuit.( this );
    getContentPane().( bQuit ); 
  }
   
  public void ( ActionEvent evt)
  {
    System.exit( 0 );
  }

  public static void main ( String[] args )
  {
    buttonQuitter frame = new buttonQuitter();
    
    frame.setSize( 200, 150 );     
    frame.( true );      

  }
}