The last version of MoaBatch and MoaJar we have is the January 1998 version ... 
here is a zip file. 
There will be no further versions available from The Open Group 
as we have sold our Research Institute to Silicomp.

    http://www.ri.silicomp.fr

You will need to run javadoc on the source files to generate the api.  
Detailed documentation on MoaJar is included in the book, 
Special Edition Using Java Beans