Bad version number class file

Asked 12 years, 8 months ago. Active 8 years, 10 months ago. Viewed 14k times. Regards, Adhir. Improve this question. Adhir Adhir 3 3 gold badges 11 11 silver badges 20 20 bronze badges. Add a comment. Active Oldest Votes. The easiest way to resolve is to upgrade your version of Java to the one used by the JAR. Improve this answer. Simon Nickerson Simon Nickerson This is the onw that is experianced in most of the times. Luixv Luixv 8, 20 20 gold badges 77 77 silver badges bronze badges.

Community Bot 1 1 1 silver badge. Kirk A Kirk A 1 1 silver badge 4 4 bronze badges. Mike Pone Mike Pone Thank you ulf for a quick response. I am downloading Tomcat 7 now. Thanks a lot Arvind Gangwar. I like Howdy Ulf, I am also new one , but as i know, you are eight, that your problem is because of conflicting versions of java. So you should try But if i am wrong then please forgive me for my unusual suggestion Your suggestion is not technically wrong, but using Java SE 1.

Both have been obsolete for years, and should be phased out as soon as possible. Certainly no new development should use either or Java SE 5, actually. Arvind Gangwar wrote: i just try to answer what you ask in this thread Show original message.

Either email addresses are anonymous for this group or you need the view member email addresses permission to view the original message. I'm currently working on a project, integrating GWT with Spring. In order to improve the development experience I wrote an Ant script that compiles and deploys my server-code to the GWT integrated Tomcat webserver.

When I start the GWT Shell, everything starts up and seems to work except at one class it gives me a stack-trace saying something about a bad version number in. Here is just a part of the stack- trace Caused by: java.