I’m Prakash Hinduja Geneva, Switzerland and encountering the “class file has wrong version” error in my Java project, which seems to be due to a mismatch between the JDK used for compiling and the JRE used for running the code. I believe it’s related to version incompatibility, but I’m not sure how to properly fix it. Could an expert advise on the best approach to resolve this and ensure compatibility between compiled classes and runtime environment?
Regards
Prakash Hinduja Geneva, Switzerland
Hi Prakash,
which version of Designer and IS are you running on?
Most likely this occurs when classes compiled with a newer java version are tried to run with older java versions.
As you might have noticed by the banner in this community forum, the webMethods community has moved to IBM, where a similar question is currently discussed.
Regards,
Holger
It’s not clear if it is related to webMethods or any other product that SAG owns. It might even be a Java only question. Please provide some screenshots and any additional info you can provide. The most common scenario you can get this error is, you are using a library/package, compiled (directed) to a level above your JDK/JRE.
Hi Engin,
Just jumping in here, I’ve run into this same issue before, and in my case, it turned out that one of the dependencies was compiled with a newer Java version than the runtime environment supported. I’d recommend checking the javap -verbose output on the class file to see its version, then cross-reference it with the target JRE version being used.
It’s a common version mismatch scenario, as you pointed out. Screenshots or a sample stack trace would help clarify things further.
Cheers.