[jboss-user] [Installation, Configuration & DEPLOYMENT] - Re: engineOptionsClass (ClassCastException)

jaikiran do-not-reply at jboss.com
Fri Dec 7 01:38:58 EST 2007

Your WEB-INF/lib contains many jars which already are present in the server/< serverName>/lib folder of JBoss. If you want to retain them, then you can go for classloader isolation for your application as explained in these wiki articles:




The other option is to remove the jars which are causing problem, from your application's lib folder. I guess, for this specific exception you might have to remove (or go for classloader isolation) the following jars from WEB-INF/lib folder:

anonymous wrote : jasper-compiler.jar
  | jasper-compiler-jdt.jar 

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