This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread 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