/** A very simple example of a Java GUI application that responds
 ** to button events.
 **/

// AWT components and Event classes used:

import java.awt.Button;
import java.awt.Frame;

import java.awt.event.ActionListener;   // interface
import java.awt.event.ActionEvent;      // events that interface relates to

public class SimpleGUI2 implements ActionListener {

  private Frame appFrame = null;
  private Button doSomethingButton = null;

  public static void main(String[] args) {

    SimpleGUI2 app = new SimpleGUI2();
    app.run();
  }

  /** Constructor: make a frame to hold the GUI components and the
   ** GUI components themselves.
   **/
  public SimpleGUI2() {
    appFrame = new Frame("Simple Java GUI");
    doSomethingButton = new Button("Do Something");

    // This object that is being constructed agrees to listen for
    // events the button will generate.
    doSomethingButton.addActionListener(this);

    appFrame.add(doSomethingButton);
  }

  /** run the application
   **/
  public void run() {
    appFrame.validate();
    appFrame.setVisible(true);
  }

  public void actionPerformed(ActionEvent e) {
    System.out.println("You pressed the button");
  }
}