Upgrading java for konqueror

[John]

Hi
My current java version is 1.4.2 and I'm about to upgrade to 1.5.2
Seems to be rather a lot of jre directories on my machine namely:

etc/alternatives/jre
usr/lib/jre
usr/lib/jvm/jre
usr/lib/jvm/-exports/jre
usr/lib/jvm/java-1.4.2-sun-1.4.2.06/jre
usr/lib/jvm/java-1.4.2-sun-1.4.2.10/jre

Konq's path is usr/lib/jvm/bin/java which seems to be a symbolic link 
to /usr/lib/jvm/jre/bin.

Well - what are they all for and do I just need to put the new version in 
usr/lib/jvm/jre/bin? Must I use a symbolic link for the java vm path in Konq?
And last but not least will the file downloaded from sun work with konq?
Must also admit that I am amazed by the number of other copies in my machine.
The suse 10 release notes did say something about the versioned directories 
though. ?Makes changes easier ??

Regards
John

-- 
Suse 10.0
KDE 3.4.2 B
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