How to access Lawson Job output from a Java program

Greetings,

I am trying to determine the best way to access output from a Lawson Jobdef. It is a multistep job and I want a way that a Java program by having key information about the job user id , job name can automatically read the output files from the latest directory output for that job and process them to a .zip file for transport.

Is there a series of system DB tables that contain the actual job output directory user id ,run number etc. for all platforms. I was thinking the java program could process a query against this table and then access the files with an operating system call.

Thanks for your help,

JMan