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Error 500:LinkageError Unsupported major.minor version 49.0

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Viewing 2 posts - 1 through 2 (of 2 total)
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  • #266621 Reply

    ruyakubu
    Member

    Hi,

    I’m getting the following error when I try running my java application. I have no idea what is causing it or how to solve it. Please HeLP!!!

    Here’s the error log:

    Error 500: LinkageError while defining class: com.poshWebApp.action.PackageDisplayAction Could not be defined due to: com/poshWebApp/action/PackageDisplayAction (Unsupported major.minor version 49.0) This is often caused by having a class defined at multiple locations within the classloader hierarchy. Other potential causes include compiling against an older or newer version of the class that has an incompatible method signature. Dumping the current context classloader hierarchy: ==> indicates defining classloader ==>[0] com.ibm.ws.classloader.CompoundClassLoader@ea9e99a Local ClassPath:

    #266709

    Riyad Kalla
    Member

    THe problem is caused by building the project using Java 5 compiler settings, but then deploying it to an application server running under Java 1.4. It doesn’t understand the byte code.

    You need to go to your project properties and change the compiler settings to generate Java 1.4 compliant code.

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