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

public class menuExample extends JFrame {

  public static void main(String args[]) {

    JFrame frame = new JFrame("Test window");
    frame.setSize(400,50);

    JMenu fileMenu = new JMenu("File");
    JMenuItem open = new JMenuItem("Open");
    JMenuItem close = new JMenuItem("Close");
    JMenuItem exit = new JMenuItem("Exit");

    exit.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        System.exit(0);
      }
    });

    fileMenu.add(open); fileMenu.add(close); fileMenu.add(exit);

    JMenu viewMenu = new JMenu("View");
    JMenuItem refresh = new JMenuItem("Refresh");
    JMenuItem fullScreen = new JMenuItem("Full screen");
    viewMenu.add(refresh); viewMenu.add(fullScreen);

    JMenuBar menuBar = new JMenuBar();
    menuBar.add(fileMenu);
    menuBar.add(viewMenu);

    frame.getContentPane().add(menuBar);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
  }
}