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JMenuItem question

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I have two menus, one is a JMenu, and one is a JPopupMenu. They both have basically the same options. I, being very naive, thought I could use one set of JMenuItems for both menus. This works fine, except when I first bring up my popup menu the items disappear from the regular menu. Could someone please explain why this happens? Is there any way to reuse my menu items in this way, or do I need to go with a set for each menu?
My code looks something like this:

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Without seeing more code I'm guessing that you are only creating one instance of the menu items. If this is the case then I believe they should disappear from the first menu when added to the second menu. Maybe try adding a Factory method to create specific instances of the menu items, then you will have the same menu items class but different instances. Hope that helps, not sure if I'm being clear.
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