Thank you again, now the linkage-editor steps works fine and gives RC=0!
However, I am not finished yet. The GO-step (again I copied from the sample JCL above) abends with RC=16 and the message "Exception in thread 'main'".
I guess the system cannot find Hello1.class file. I compiled the Hello1.java file unter USS (with omvs shell) and the resulting class file is located in /u/myuserid/Hello1.class.
The ENV-file, which I specify in the GO-step looks like this:
Do you have an idea how to solve this?