MenuTest.java

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

public class MenuTest extends JFrame implements ActionListener{
    public MenuTest(){        
        JMenuBar bar=new JMenuBar();
        
        JMenu menu=new JMenu("File");
        
        JMenuItem newItem=new JMenuItem("New");
        JMenuItem openItem=new JMenuItem("Open");
 		// menu maddelerine tıklama olaylarını dinliyoruz.
        newItem.addActionListener(this);     
        openItem.addActionListener(this);        
        
        menu.add(newItem);	
        menu.add(openItem);
        bar.add(menu);

        setJMenuBar(bar);    
    }    
    public static void main(String[] args){
        MenuTest test=new MenuTest();
        test.setBounds(0,0,200,200);
        test.setVisible(true);
    }
    
    public void actionPerformed(ActionEvent e) {
        if(e.getActionCommand().equals("New")){
            System.out.println("yeni");
        }else if(e.getActionCommand().equals("Open")){
            System.out.println("aç");
        }        
    }
    
}