Note: Java 1.6 for Leopard is 64 bit only, but for Snow Leopard it is available for both 32 and 64 bit.
Since August 2012 updates for Java (and especially Java Runtime Environment, which is what you actually need) must now be downloaded direct from Oracle:
Further information here:
and their FAQ’s:
However, if you need the Jave 6 JRE and plug-in, MadMAC0 has posted at
Apple has also posted (Oct 22/12) the approved solution for restoring the Java 6 plug-in:
Interesting article here on why Apple removed Mac browsers’ ability to run Jave Applets: