Apple on Thursday released an update for Java that is available for immediate download. According to notes provided with the update, Java for Mac OS X 10.6 Update 1 delivers improved compatibility, security, and reliability by updating Java SE 6 to 1.6.0_17. Apple recommends in the update notes to relaunch any web browsers and Java applications after installing the update.
You can download the update via the software update mechanism in Mac OS X.