Besides Old Version, you also can download them from Sun
Old Versions of Java -Sun
As much as a wish every bug release of Java was perfect, some versions work better than others. For example, a number of our customers have had some sincere problems with Java 1.4.2_05. Therefore, we roll back to 1.4.2_03 typically.
The problem is always finding these version on Sun's site which is damn near impossible to navigate some times. For those looking for them, here is a link to the Java Archive.
Never fret! When you need to get that JDK 1.1 release, it's there.
Archive Java[tm] Technology Products Download
http://java.sun.com/products/archive/index.html
This page organizes final releases of Java Technology downloads by platform.
http://java.sun.com/downloads/index.html