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Thread: using eclipse on fedora

  1. #1
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    Default using eclipse on fedora

    I am new user on fedora (release: 8 codename: werewolf kernel linux 2.6.23.1-42.fc8 GNOME 2.20.1),
    while doing java program got error,

    Error:
    Exception in thread "main" java.lang.UnsupportedClassVersionError: HelloWorld : Unsupported major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java :638)
    at java.security.SecureClassLoader.defineClass(Secure ClassLoader.java:143)
    at java.net.URLClassLoader.defineClass(URLClassLoader .java:281)
    at java.net.URLClassLoader.access$000(URLClassLoader. java:74)
    at java.net.URLClassLoader$1.run(URLClassLoader.java: 216)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.j ava:209)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:3 24)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:2 69)
    at java.lang.ClassLoader.loadClassInternal(ClassLoade r.java:337)
    Error: Could not find the main class.
    Error: A JNI error has occurred, please check your installation and try again


    program:
    public class HelloWorld {

    public static void main(String[] args) {
    System.out.println("Hello, World");
    }

    }


    this error is there in other programs also,
    please tell me what is wrong.


  2. #2
    Think of me.... Mr.777's Avatar
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    Default Re: using eclipse on fedora

    I've never used Fedora. But looking through the exception trace, i can conclude that it can not find the main class. So, this leads to the question if you have set the environment variables as you do in windows xp, windows 7 etc. If not, read the manual on setting the environment variables in Fedora.

  3. #3
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    Default Re: using eclipse on fedora

    This problem is solved ,
    i am not sure but what i did is , i installed the jdk again .
    this problem was may be because of not installing jdk properly .

    thank you Mr.777,

    lanpan.

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