I'm sorry, but the Java related Debian packages are no longer supported. The j2se-package has been moved to Debian/unstable and is no called java-package. The obsolete mpkg-j2sdk has been completely removed. The package java-select has never reached a stable state.
You can find almost all old packages here: http://z42.de/debian/old/
The following package only exists to ease transition to the new package from Debian/unstable.
This is a dummy package to force an upgrade to the new package name (java-package). The new package is available from Debian/unstable. This package can be safely removed after upgrade.