If you're like me and have a slightly older Mac, then you're OUT OF LUCK:
http://support.apple.com/kb/HT1856
Apple has decided to screw Leopard users on systems like my MacBookPro3,1 with an ANCIENT Java v1.5.x with no hope of ever getting to v1.6.
You can run Software Updates all that you like, but you'll never get more than this lousy outdated v1.5.0_22
COME ON, APPLE, are you KIDDING ME?!
My !@#$^& MacBookPro3,1 is STILL UNDER APPLECARE EVEN!!!!!!!!!!!!!!!!!!!!!!
WHY NO 32-bit JAVA on MacBookPro3,1?!?!?!?!?!