Thread: A PI Problem

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  1. #1 A PI Problem 
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    Alright. First of all, I'm using this source: http://www.rune-server.org/runescape...pes-fixed.html

    Not the client, just the source, haven't found a client yet. And when I try to run it, I get this:

    Code:
    Exception in thread "main" java.lang.UnsupportedClassVersionError: server/Server
     : Unsupported major.minor version 51.0
            at java.lang.ClassLoader.defineClass1(Native Method)
            at java.lang.ClassLoader.defineClassCond(Unknown Source)
            at java.lang.ClassLoader.defineClass(Unknown Source)
            at java.security.SecureClassLoader.defineClass(Unknown Source)
            at java.net.URLClassLoader.defineClass(Unknown Source)
            at java.net.URLClassLoader.access$000(Unknown Source)
            at java.net.URLClassLoader$1.run(Unknown Source)
            at java.security.AccessController.doPrivileged(Native Method)
            at java.net.URLClassLoader.findClass(Unknown Source)
            at java.lang.ClassLoader.loadClass(Unknown Source)
            at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
            at java.lang.ClassLoader.loadClass(Unknown Source)
    Could not find the main class: server.Server.  Program will exit.
    Press any key to continue . . .
    Yes I have compiled it without any errors. If that makes any difference.
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  2. #2  
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    Could not find the main class: server.Server
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  3. #3  
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    get jdk 1.7.0
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  4. #4  
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    Well derpterp. I do have JDK 7.

    Quote Originally Posted by lostlegacy2 View Post
    Could not find the main class: server.Server

    I don't know what that means.
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  5. #5  
    q.q


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    You compiled it with a JDK version different to your JRE version
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  6. #6  
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    Don't know what you're talking about....
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  7. #7  
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    because the packaging is wrong probably?
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  8. #8  
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    Enlighten me. It has worked before, it has to be something wrong with my computer, but I do not know what.
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  9. #9  
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    It means that you compiled your classes under a specific JDK, but then try to run them under older version of JDK. So, you can't run classes compiled with JDK 6.0 under JDK 5.0. The same with classes compiled under JDK 7.0 when you try to run them under JDK 6.0.

    tldr; uninstall all of your JDK's and jre's and re-install the lastest version, hope I helped and hopefully you understand.


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  10. #10  
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    I don't have any other version of JDK besides 7. I never did, I never will.
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