A good answer might be:

It would not be unusual to miss a blank or two.

Complete Program

For such a complicated relationship diagram, this is a short program.

import java.awt.*; 
import java.awt.event.*;

public class buttonQuitter extends Frame implements ActionListener
{
  Button bQuit = new Button("Click here to Exit"); // Construct a Button.

  buttonQuitter() // constructor for buttonQuitter
  {
    setLayout( new FlowLayout() );       // Choose the layout manager. 
    bQuit.addActionListener( this );     // Register the buttonQuitter object 
                                         //     as the listener for its Button.
    add( bQuit );                        // Add the button to the buttonQuitter object.
  }
   
  public void actionPerformed( ActionEvent evt)
  {
    System.exit( 0 );
  }

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

  }
}

The program can be copied to NotePad, compiled and run in the usual way.

QUESTION 18:

How many times must you click the Button for the program to exit?

Click Here after you have answered the question