This release updates Java SE 6 to version 1.6.0_15, J2SE 5.0 to version 1.5.0_20, and J2SE 1.4.2 to 1.4.2_22.
This release is only for Mac OS X 10.5.8 or later versions of Mac OS X 10.5.
This release of J2SE 5.0 and J2SE 1.4.2 supports all Intel and PowerPC-based Macs. Java SE 6 is available on 64-bit Intel-based Macs only.
For information about the security content of this update, please visit this website: http://support.apple.com/kb/HT1222