Unable to Open .Jar - Exception Error

[mukker]

Please go easy with me guys. I'll do my best to explain and i'm not even sure this is the right forum - shows how much i know. If any of you clever people have a solution i'd really appreciate it in laymen terms.

I have a user who is trying to open a .jar file and receives this error:

"Exception in thread “main” java.lang.UnsupportedClassVersionError:
U nsupported major.minor version 49.0) at java.lang"

After a bit of googling i've found that it's to do with it being compiled in a higher version than the user has on their workstation? I've tried right clicking the ".jar" file and opening it with another version of Java but still get the same error. I believe this can be resolved but no idea at the moment and would really appreciate some help.

 

[Diancecht]

First of all, I'd post this in the Java forum, as it's more appropiate for the question.

After that, what do you mean with "open a jar"?

Cheers,
Dian

 

[mukker]

I've posted it in the Java Forum.

It's the file extension ie: somefile.jar