Oracle is once again making people enter contact information just to receive, via email, a link to download "legacy" versions of the JDK.

A couple of these links, for your convenience:

http://java.sun.com/javase/downloads/5u22/jdk (5u20 and 5u21 work as well)

and, for 1.4.2_19:

http://java.sun.com/javase/downloads/jdk/142/

Note to The Google: Please categorize this post under "Links to Sun JDK 1.4", "Links to Sun JDK 1.5", "Sun JDK Download Links", "Oracle Please Be Nice", etc. Not that I expect The Google to listen much.