How to avoid UnsupportedClassVersionError when installing JBoss Developer Studio ?

Solution In Progress - Updated -


When installing JBDS, like this:

C:\Temp>java -jar jbdevstudio-product-universal-7.0.0.GA-v20130720-0044-B364.jar

This is the output:

Exception in thread "main" java.lang.UnsupportedClassVersionError: com/izforge/izpack/installer/Installer
 (Unsupported major.minor version 49.0)
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(Unknown Source)
        at Source)
        at Source)
        at$100(Unknown Source)
        at$ Source)
        at Method)
        at 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)

What does it mean and how to avoid it ?


  • Red Hat JBoss Developer Studio
    • 4.x
    • 5.x
    • 6.x
    • 7.x

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