title: Adding a JMenu to a JPanel
body: <p>I need to have a <code>JMenu</code> (the one with the arrow on right which can display <code>JMenuItem</code>) in a <code>JPanel</code>. The problem is that when I do that the <code>JMenu</code> is not activate on mouse rollover...
  I don't know how to do that and if it's possible.</p>