due to my current line of work, i am not able to completely migrate to the latest stable java, version 6, that ships with slackware-12.2 and slackware-current.
i have taken a snapshot of the last slackware build scripts, for java 1.5 and have kept them updated for the latest jre and jdk updates.
you can find them here for the jdk and the jre

currently it is on 1.5.0 update 17, but this is an svn directory, so it may bump versions at a later date.

enjoy,

vb