Question

Why is my .jar file throwing this error?

Asked by: aibdev

I am able to compile my jar file without errors but I do get the the following message:

 [javac] Compiling 1 source file to C:\WINXP\Profiles\08916\workspace\Unique Name Flex Filter_ruth\bin
    [javac] Note: C:\WINXP\Profiles\08916\workspace\Unique Name Flex Filter_ruth\src\com\fatwire\custom\filters\UniqueNameFilter.java uses or overrides a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] Note: C:\WINXP\Profiles\08916\workspace\Unique Name Flex Filter_ruth\src\com\fatwire\custom\filters\UniqueNameFilter.java uses unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.


When the jar file is invoked I get the following error:

Error thrown is:
"Could not get arguments from filter, -100, com.openmarket.gator.seed.FlexFilterInstance exception: LinkageError while defining class: com.fatwire.custom.filters.UniqueNameFilter Could not be defined due to: com/fatwire/custom/filters/UniqueNameFilter (Unsupported major.minor version 50.0) 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."

More detailed log file attached.

Any ideas why I might be getting this error?

  • log.txt
    • 13 KB

    logs generated by error

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Asked On
2009-07-28 at 03:24:31ID24605625
Topics

Web-Based CMS

,

Web Development Software

,

Java Programming Language

,

Web Languages/Standards

,

Web Development

Participating Experts
1
Points
500
Comments
3

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Answers

 

by: TimYatesPosted on 2009-08-10 at 04:05:46ID: 25058711

You're compiling your jar with Java 6 and then using it with something running on Java 5

You will need to specify the target version when you compile the jar

20120131-EE-VQP-002

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