This paper sets out the compelling enhancements to the Java support in
CICS® Transaction Server Version 4.2. Although it has been possible to
run Java applications in CICS Transaction Server (CICS TS) since Version
1.3, the significant strides made in CICS TS 4.2 represent a
game-changing shift in the technology.
Read the White Paper here ftp://public.dhe.ibm.com/software/htp/cics/pdf/CICS_TS_V4.2_Java_paper_final.pdf