i have some web applications , some of them are compiled under JRE 1.4.2 , JBoss 4.0, some are compiled under JRE 1.6 , JBoss 4.0.
my question is how to deploy them under my JBoss 4.0 enviroment?
If you compile your app with JDK1.6 and use the 1.5 compatibility mode you should able to run it.
Also you might run JBoss 4.0 with the 1.5 or 1.6 JVM it should work.