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Editorial Team
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Asked: 2026-06-08T15:38:17+00:00

I am following this tutorial . Although I did exactly same as the tutorial,

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I am following this tutorial.

Although I did exactly same as the tutorial, even i watched the video.
Even i tried other tutorial.But all of my try, i got that error everytime.

When i click to run, a error box display and “A Java Exception has occurred.”

And i see that errors in consol

Exception in thread "main" java.lang.NoClassDefFoundError: com/jogamp/common/type/WriteCloneable
    at java.lang.ClassLoader.defineClass1(Native Method)
    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$100(Unknown Source)
...

Even i uninstalled jdk&jre and i download last version and install.
I am using eclipse, Windows 7 home premium 64 bit.

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1 Answer

  1. Editorial Team

    I find solution.

    If you get JVMUtil or WriteCloneable error with NoClassDefFoundError, you must copy that 4 library jar to java/jre/lib/ext folder.

    thanks for schabby.

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