32Bit JVM
From MidrangeWiki
Introduced in V5R4, the 32bit Java Virtual Machine is supposed to operate with much less system requirements, although it does require that PASE be installed.
Information on how to install the 32 bit JVM can be found at http://publib.boulder.ibm.com/infocenter/iseries/v5r4/topic/rzaha/rzahainstallitj.htm