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Thread: ClassNotFoundException When running through commad line

  1. #1
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    Default ClassNotFoundException When running through commad line

    Hi,

    I have writen a script using the json array library. I have imported the library into my project in eclipse and the programe runs fine through the eclipseterminal but when running it through Command Prompt it calls a ClassNotFoundException.

    I assume this is, for some reason, becuase the json library didnt compile. But im not to sure.

    This is the error that is displayed when trying to run the programe.

    C:\Users\user\Documents\workspace\Primes\bin>java PrimesMain
    Exception in thread "main" java.lang.NoClassDefFoundError: org/json/JSONException
    Caused by: java.lang.ClassNotFoundException: org.json.JSONException
    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)
    at java.lang.ClassLoader.loadClassInternal(Unknown Source)
    Could not find the main class: PrimesMain. Program will exit.

    Please can some one help?


  2. #2
    Super Moderator Json's Avatar
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    Default Re: ClassNotFoundException When running through commad line

    You need to specify the classpath on where the JVM can find any additional libraries.

    See Setting the class path

    // Json

  3. The Following User Says Thank You to Json For This Useful Post:

    tomiroth (November 26th, 2009)

  4. #3
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    Default Re: ClassNotFoundException When running through commad line

    Thank you this has worked

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