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Thread: java run time problem?

  1. #1
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    Default java run time problem?

    class a
    {
    public static void main(String args[])
    {
    System.out.println("hello");
    }
    }

    am running , de above program.
    but after complilation ,
    if i give "java a " the o/p wont appear.

    i have tried reinstallation and all.

    the same error occurs,

    java.lang.unsupportedclassversionerror a <unsupported major.minor error 50.0>

    jerr.JPG



    pls help me...

    how to resolve dis....


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: java run time problem?

    What version of java are you trying to execute the class file with?
    Is it the same or a younger version than the javac command used to compile it?

  3. #3
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    Default Re: java run time problem?

    Quote Originally Posted by Norm View Post
    What version of java are you trying to execute the class file with?
    Is it the same or a younger version than the javac command used to compile it?
    javac 1.6.0_26

    java 1.3.1_01

    am using dese versions.

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: java run time problem?

    java 1.3 can NOT execute class files from javac 1.6
    You need to use the java version the same as or later than the javac.
    On windows there is a jre folder in the SDK folders with a java command.
    Last edited by Norm; July 15th, 2011 at 09:10 AM.

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    Default Re: java run time problem?

    Look at the command line options for javac, in particular the target option. This will allow you to compile and run on earlier version - provided of course the code does not use classes or libraries which require a later version than the target

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    Default Re: java run time problem?

    Quote Originally Posted by Norm View Post
    You need to use the java version the same as or later than the javac.
    Just a slight modification.
    Improving the world one idiot at a time!

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    Default Re: java run time problem?

    thanks for dose who replied for me.

    i cant get java version 1.6,but i had installed older version of javac. this may work somewhat.

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