‘java.lang.UnsupportedClassVersionError: Bad version number in .class file’

[sathish mssathish]

hi

i have upgrade Tomcat server from 4.1.31 to 6.0.18 and java 5 update 5 to java 5 update 18
while stating the application it show the error message in the catalina log file ‘java.lang.UnsupportedClassVersionError: Bad version number in .class file’

how to solve the above problem.

[Albareto McKenzie]

Maybe this can help you:

http://forums.sun.com/thread.jspa?threadID=5144147

http://lkamal.blogspot.com/2008/04/javalangunsupportedclassversionerror.html

[Bear Bibeault]

"sathisj java", please check your private messages for an important administrative matter.

[Shashank Rudra]

Thanks Albareto. You are a life saver man. I was going literally mad over this problem.