将JMenuBar添加到JPanel

Question

I cannot add a JMenuBar to a JPanel .

My code is as follows:

public class MyClass extends JPanel
{
      public MyClass ()
      {
              JMenuBar b = new JMenuBar();
              add(b);
              b.add(new JMenu("Menu"));
              ...
       }
}

Answer 1

JMenuBar bar = new JMenuBar();
JMenuItem item = new JMenuItem("Item1");
bar.add(item);//item menu
add(bar); // ad to panel

if you want to position themselves could use an example design BorderLayout

setLayout(new BorderLayout());
add(bar, BorderLayout.NORTH);//position menu