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PO
 

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    <p>Since you seem to have a fair number of JPanels, I don't think it would be a good idea to convert them to JFrames, since that would clutter user's dektop (who wants to run one application and all of the sudden find their desktop filled with 6 or more new windows ?). </p> <p>So the "JPanel" choice seems logical. </p> <p>Still, in case you want to give your users the option to customly arrange those panels (e.g. overlapping, side-by-side etc), then <strong><a href="http://docs.oracle.com/javase/6/docs/api/javax/swing/JDesktopPane.html" rel="nofollow">JDesktopPane</a></strong> might be a nice solution.<br> (Also, take a look at the relevant section of the <strong><a href="http://docs.oracle.com/javase/tutorial/uiswing/components/internalframe.html" rel="nofollow">Java Tutorials</a></strong>.)</p> <hr> <p>Not directly related to your question, but having such huge classes (5000 lines without functionality...) is not considered a good coding practice (if not anything else for maintanability reasons).<br> From Oraclre's <strong><a href="http://www.oracle.com/technetwork/java/codeconv-138413.html" rel="nofollow">Code Conventions for the Java Programming Language</a></strong>, section <strong><a href="http://www.oracle.com/technetwork/java/javase/documentation/codeconventions-141855.html#3043" rel="nofollow">3 - File Organization</a></strong>:</p> <blockquote> <p>Files longer than 2000 lines are cumbersome and should be avoided.</p> </blockquote> <p>So, it might be a good idea to try and break it down into smaller, more reusable and maintanable pieces of code/classes.</p>
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    1. POOne JFrame and 50 JPanel on that or only 50 JFrame alone or any alternative?
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    1. POOne JFrame and 50 JPanel on that or only 50 JFrame alone or any alternative?
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    1. COThanks for your reply, When you have a program like that which user click on each JMenuItam and there is a functionality. What would you do? one JPanel for each of them inside the JFrame or seprate JPanel class and add them to JFrame. How can I do that?
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    2. COIf you are asking if the **code** for each JPanel should be in the same class/file as the main JFrame class, the answer is definitely NO. (If you are asking something else, then I misunderstood you :))
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    3. COYes you were right and if you say no what is the alternative?
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