This week's book giveaways are in the Refactoring and Agile forums. We're giving away four copies each of Re-engineering Legacy Software and Docker in Action and have the authors on-line! See this thread and this one for details.
have a look at Toolbox for Java & JTOpen. You pretty much have 2 standard choices; If the code is going to be run exclusively on the AS/400, then use the IBM Toolbox for java. If you are going to run it from a client or some other OS, then definitely use JTOpen. Jamie