// This code example is created for educational purpose
// by Thorsten Thormaehlen (contact: www.thormae.de).
// It is distributed without any warranty.

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


class MyGui extends JFrame implements ActionListener{

  private int counter = 0;
  JLabel label = new JLabel("Hello World");

  public void createGUI() {
    setTitle("HelloGUI");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setSize(320, 240);

    setLayout(null);
    label.setBounds(120, 0, 150, 30);
    getContentPane().add(label);

    JButton button = new JButton("Increment");
    button.addActionListener(this);
    button.setBounds(120, 30, 150, 30);
    getContentPane().add(button);

    JMenuBar menuBar = new JMenuBar();
    JMenu menu = new JMenu("File");
    menuBar.add(menu);
    JMenuItem item = new JMenuItem("Open");
    menu.add(item);
    setJMenuBar(menuBar);

    setVisible(true);
  }

  public void actionPerformed(ActionEvent event) {
    counter++;
    label.setText("Click #" + Integer.toString(counter));
  }

}

public class ActionButton {
  public static void main(String[] args) {
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        MyGui myGUI = new MyGui();
        myGUI.createGUI();
      }
    });
  }
}