I am assuming this is simple and i just missed it int he documentation somewhere. how do i activate source level 5.0 i am using a jdk 1.5
Are you asking how to get JSPs to compile using a 5.0 compiler? If so, try adding the compilerTargetVM and compilerSourceVM parameters to the jsp servlet in server/xxx/deploy/jboss-web.deployer/conf/web.xml file.
Actually, I am surprised that 4.2.1 does not have the 1.5 compiler set by default (the source shows 1.4 as the default, still).