> What does overlay mean? virtual/jre and virtual/jdk?
A portage overlay is sort of like /usr/portage, but for third party
ebuilds. See [1] and [2] for more info. This overlay will include new
ebuilds, ebuilds in progress, and existing ebuilds relating to java
and sablevm/sablevm-sdk. sablevm-sdk is not in portage yet, but an
ebuild for it exists[3]. It provides virtual/jdk, however sablevm-sdk
is missing some features (tools.jar) and the ebuild needs some work
(for example, if USE="-nogjdoc" then sablevm-sdk depends on antlr
which depends on virtual/jdk).

I'm a student and have exams this week, but starting on Saturday
afternoon I'll have a lot more free time for Gentoo stuff. Keep
checking my java notes page[4]; when I have an overlay ready I'll post
its location there along with re-written and expanded notes.

[1] http://gentoo-wiki.com/HOWTO_Installing_3rd_Party_Ebuilds
[2] http://gentoo-wiki.com/TIP_Overlays
[3] http://gentooexperimental.org/svn/java/gentoo-java-experimental
       /dev-java/sablevm-sdk/
[4] http://mediumbagel.org/java/

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