Upstream version changed. The beta's aren't available anymore. There are some bugs (with regard to the KDE/Gnome bits -- which are missing now) with these ebuilds, but here's a starting point.
Created attachment 38746 [details] java-sdk-docs-1.5.0.ebuild
Created attachment 38747 [details] sun-jdk-1.5.0_rc1.ebuild
MD5 b8c90fb75b270cb32a72766ab8f89dbb jdk-1_5_0-rc-linux-i586.bin 46047710 MD5 ffacada16b4846ef7d75956b6ca47f89 jdk-1_5_0-rc-linux-amd64.bin 42015770 MD5 3020d44dc9a8f9beaf9a1d8469983d19 jce_policy-1_5_0-rc.zip 8836
in the three