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Thread: prevent duplicate Jframes

  1. Dec 22nd, 2009, 06:21 PM #1
    VBlee
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    prevent duplicate Jframes

    I have a couple of classes, one is my mainGUI which has a JMenu in it, if a certain JMenuItem is select it will create a new GUI (this other GUI is another window thats totally different). The new GUI opens up as i want but i can continue to create a new instances of this GUI.

    So the basic question is... How do i ensure my program only allows one instance of this GUI?
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  2. Dec 22nd, 2009, 07:17 PM #2
    ComputerJy
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    Re: prevent duplicate Jframes

    Use a Singleton class for that Gui
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  3. Dec 22nd, 2009, 09:51 PM #3
    kfcSmitty
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    Re: prevent duplicate Jframes

    Just elaborating a little but in what Jy suggests; You should definitely do some research on design patterns. It was something that was never even mentioned while I was in college but can help put you in the proper mindset when problems like these occur.

    For a very basic overview of the different design patterns, you can look here.
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  4. Dec 22nd, 2009, 10:27 PM #4
    ComputerJy
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    Re: prevent duplicate Jframes

    It was something that was never even mentioned while I was in college
    Back then Software engineering was someone's job title not a college class or major. I agree, design patterns are important for people to know but I can't see where does it fit in this issue!
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  6. Dec 23rd, 2009, 07:05 AM #5
    kfcSmitty
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    Re: prevent duplicate Jframes

    Quote Originally Posted by ComputerJy View Post
    I agree, design patterns are important for people to know but I can't see where does it fit in this issue!
    Maybe I misunderstood this statement, but singleton is a design pattern. So I must go with my first instinct and ask what you mean in that sentence.
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  7. Dec 23rd, 2009, 07:20 AM #6
    ComputerJy
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    Re: prevent duplicate Jframes

    I like laziness so no need to read if you have the answer
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  8. Dec 23rd, 2009, 08:34 AM #7
    kfcSmitty
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    Re: prevent duplicate Jframes

    Quote Originally Posted by ComputerJy View Post
    I like laziness so no need to read if you have the answer
    I like your style.
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