Eclipse - JBoss 4.2.0GA runtime with JRE System Library [JavaSE-1.6] interoperability

Is JBoss 4.2.0GA operational with JavaSE-1.6? I have openjdk installed in Ubuntu. Whenever I am trying to set the Properties of a Dynamic Web Project to

1. JBoss 4.2 Runtime
2. JRE System Library [JavaSE-1.6]

The proj开发者_StackOverflow中文版ect explorer of Eclipse showing an error beside the project name.

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Is JBoss 4.2.0GA operational with JavaSE-1.6?<<

Absolutely, this is what we use in production.