import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
import java.awt.event.*;


public class Sample6 extends JFrame implements ActionListener{    // inherit JFrame

/**
 * Constructor sets up the window
 */
  public Sample6() {
//
// setup the frames banner/title bar
//
     super("Sample 6");  // call JFrame's constructor and give it a title
     setSize(500,400);  // set the width of the window to 400 pixels, height to 300.
//   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // exit the whole program when this frame is closed
     addWindowListener(new WindowAdapter() {      // Quit the application
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
//
// add a button to popup the dialog box
//
    JButton button = new JButton("Press this button");
    button.addActionListener(this);
    getContentPane().add(button);


  }

/**
 *
 * this method responds to the OK and Cancel buttons, if it is the ok
 * button it will display the contents of the textfields on the screen.
 */
public void actionPerformed(ActionEvent event){
  if(event.getSource() instanceof JButton) {  // is this a button?
    Dialog6 dialog = new Dialog6(this);
    dialog.setVisible(true);

  }
}
/***********************************************************************
 *
 *  Main routine, Note, this routine can be in any class.
 */
  public static void main(String[] arguments){

    Sample6 fr = new Sample6();  // create the sample6 frame
    fr.setVisible(true);         // allow it to be seen

  }

}