http://datagrid.in2p3.fr/distribution/
Currently the best choices are:
http://datagrid.in2p3.fr/distribution/external/RPMS/j2sdk-1.4.1_01-fcs.i586.rpmand
http://datagrid.in2p3.fr/distribution/external/RPMS/j2sdk_profile-1.4.1_01-1.noarch.rpm
Download these for example using wget:
wget -r -nd http://datagrid.in2p3.fr/distribution/external/RPMS/\ j2sdk-1.4.1_01-fcs.i586.rpm
Install these RPMs as root. Example:
rpm -ivh j2sdk-1.4.1_01-fcs.i586.rpm