Apple has released Java 2 Platform Standard Edition (J2SE) 5.0 Release 3.
The release includes version 1.5.0_05 and improves the functionality of J2SE 5.0 on Mac OS X 10.4.2 Tiger and later.
The software allows applications and applets developed for the J2SE 5.0 platform to run on Mac OS X 10.4.2 and later.
It does not change the default version of Java on a Mac from Java 1.4.2 to J2SE 5.0, though Java applications that require J2SE 5.0 may specifically request it.
Users can choose to change the preferred Java version for applications and applets by using the new Java Preferences utility, which is installed by the J2SE 5.0 update at /Applications/Utilities/Java/J2SE 5.0/.
The update weighs in at 42MB and is available through Software Update and also directly from Apple's website.