Thread: Trouble with Java menubar in java frame.

Hey, I've got some trouble with my code. It should be two tabs in the frame, with the titles "File" and "Open". But I can only see "File". I rewrote the code and launched it, and I could see both, then I changed size of the frame, and they were gone again. Sometimes I can see neither one, it's really weird. Here's the code, take a look at it and see if you can see any mistakes. And I'm using Dr Java and Eclipse, neither of them works.

import javax.swing.*;
public class Meny{
public static void main(String[] cmdLn){
JFrame f = new JFrame("Meny");
f.setVisible(true);
f.setSize(300,300);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JMenuBar mb = new JMenuBar();
f.setJMenuBar(mb);

JMenu file = new JMenu("File");
mb.add(file);
JMenuItem exit = new JMenuItem();
file.add(exit);

JMenu open = new JMenu("Open");
mb.add(open);

}

}


I can't see what I've done wrong. Help would be appreciated.
Edit
All of a sudden I can see the two tabs, but I can't see the "exit" option in the tab "File". It's really weird.

Hi

You should provide label for exit menu item. i.e JMenuItem exit = new JMenuItem("Exit");

I'm not sure what you mean, JLabel?

Anyway, it's working better now, but I can't understand why it's so messy.

Do you think it has anything to do with the size? At first, when I start the program, the tabs aren't there, but when i grab the edge and reducing/increasing the frame's size, they show up. Strange.

Thank you very much, I will remember that.