topic Re: java.lang.UnsupportedClassVersionError: ... : Unsupported major.minor in Talend Studio

java.lang.UnsupportedClassVersionError: ... : Unsupported major.minor

Anonymous — Thu, 19 Dec 2013 14:11:46 GMT

I am having this exception when running my job that involves loading a jar lib I created using tLibraryLoad
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java.lang.UnsupportedClassVersionError: ... : Unsupported major.minor version 51.0
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The exception occurs when I tried to instantiate a class in my jar in the tSetGlobalVar.
I have compiled and created the jar using java 1.6.0_45, and have also set the Installed JRE in the TOS to the same JDk 1.6.0_45.
I have also tried to compile and jar using the jre 1.7.25 and set the Installed JDK in the TOS to the same jre1.7.25, still have this exception
Can someone tell me what I am missing?
Thanks
PS when I tried to run class in my jar on the command line, it works no matter what: I compile and jar it using jdk 1.6.0_45, and run it using jdk1.7.25. What is the difference when running it inside the TOS?

Re: java.lang.UnsupportedClassVersionError: ... : Unsupported major.minor

Anonymous — Fri, 20 Dec 2013 09:20:01 GMT

This problem is always caused by "a higher JDK during compile time and lower JDK during runtime".
In TOS inside the default JDK version is your "Environment Variables" which you set default.
Of cause ,you can change you TOS JDK version in "Windos--->Talend--->Java interpreter"

Re: java.lang.UnsupportedClassVersionError: ... : Unsupported major.minor

Anonymous — Fri, 20 Dec 2013 13:43:31 GMT

The Java Interpreter was also set to jdk1.6.0_45.
Anyway, I decided to restart the TOS later yesterday for a different reason, and this error was gone magically, and it is working as it is suppose to.

Re: java.lang.UnsupportedClassVersionError: ... : Unsupported major.minor

Anonymous — Wed, 29 Jul 2015 14:10:33 GMT

The Java Interpreter was also set to jdk1.6.0_45.
Anyway, I decided to restart the TOS later yesterday for a different reason, and this error was gone magically, and it is working as it is suppose to.

I have the same problem but no magic things happen to solve...

Re: java.lang.UnsupportedClassVersionError: ... : Unsupported major.minor

Anonymous — Thu, 30 Jul 2015 09:39:01 GMT

Hi olindo,

On which official version did you get that?
Would you mind giving us some additional details like what's your OS and java version?
Best regards
Sabrina