JMenu doesn't appear until I minimize or resize the JFrame

Question

I have a GUI with a JMenuBar , the problem is that sometimes a JMenu doesn't appear until i resize or minimize the JFrame . Can someone help me?

Answer 1

I had the same problem, and I solved it by setting the JFrame visible AFTER the code for the menu. So you first create a JFrame after that add the JMenuBar and at last: frame.setVisible(true); (my frame is just called "frame" replace the "frame" with the name of your frame)

Answer 2

另外，比@马尔科的解决方案不太漂亮，是调用frame.revalidate()后frame.setJMenuBar() -call。