Issues with JBoss 7.1.1.Final

[aanshu_2302]

Hi,

I am new to Jboss 7. Currently I am working on a project which will use Jboss 7.1.1 Final and JDK 1.7. I want to know what the things one should keep in mind for working in this enviornment.

I am using EJB 3 and JPA and I got many deployment errors as earlier I was using Java 7 and then moved back to Java 6 but then there were version errors.

Please point out possible problems or risks that one should keep in mind and what ever issue you might have encountered.

Thanks,

Anshu

[jaikiran]

Please post the actual errors that you see.

[aanshu_2302]

I have fixed the errors for now. The issue I came across was, the development was done using JDK 7 and when I impoorted the project (using JDK 6) , the EJB were not deployed as there were version errors.

I think that this has to do difference in the Bytecode generation in JDK 7 and JDK 6.

Also, I believe this is more of a JDK error than a Jboss issue.

I would love to know if anyone has faced this issue or something similar? Anybody using JDK 7 in production systems yet with Jboss 7?

Thanks,

Anshu

[sfcoy]

You can't compile with Java 7 and then run on Java 6 unless you explicitly configure your build tool to generate Java 6 compatible byte code.

[aanshu_2302]

Yes. I thought so that is why I used changed JDK 6 to JDK 7 in Eclipse.

How can we support bytecode for JDK 5/6/7 simultaneously?

[sfcoy]

Java bytecode is forward compatible. Therefore, if you compile for JDK5 then it will run fine on 6 and 7.

Personally, I would not bother with Java5 unless it was imperative.

[aanshu_2302]

Yes i agree... Java 5 does not worry me. I am worried about JDK 6. How can we make sure that even if we develop using JDK 7, we run the code even on JDK 6 or 7 ?

Any other issues you have faced earlier on this or that you perceive? I think no browser supports jre 7 yet? WIll that pose any problems?

[sfcoy]

You need to check out the -source and -target options for the java compiler (aka javac).