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Editorial Team
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Editorial Team
Asked: May 15, 20262026-05-15T02:21:07+00:00 2026-05-15T02:21:07+00:00

I am getting this bad version error as shown below. How to fix this.

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I am getting this bad version error as shown below. How to fix this. Do I need to have a separate jar file for each version of java?

Bad Version Error
(source: sourceforge.net)

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  1. Editorial Team
    Editorial Team
    2026-05-15T02:21:08+00:00Added an answer on May 15, 2026 at 2:21 am

    How to fix this.

    Is this a plugin that you created, or did you download it from somewhere?

    I’ve never seen this myself, but I suspect that you are running Eclipse using an older version of Java (e.g. 1.5) and trying to use a plugin that was compiled for Java 1.6. Assuming that is the case you can:

    • upgrade the JDK used to run Eclipse to 1.6,
    • try to find a version of the plugin that was compiled for the Java 1.5 platform, or
    • download the plugin sources and build it for Java 1.5 yourself.

    Do I need to have a separate jar file for each version of java?

    No. A JAR file built for a Java 1.5 target platform should also work on a Java 1.6 platform. (Just not the other way around …)

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