Hello, what is the best way to use libgcj-4.0.0-8 and jdk-1_5_0_04-linux-i586 from Sun on the same fc4 system? Is it to leave the already installed gcj on fc4 untouched and simply installing Suns rpm too, which then will be installed under /usr/java/jdk1.5.0_04? Or is there a better way on using gcj and Suns jdk side by side on fc4? I have to learn the java language for my study and I will do this with gcj, but I also have to use Java Swing and therefor I thing I have to use Suns jdk1.5.0_04. So before making a mistake and breaking dependences on my fc4 system, I hope someone will explain me how to manage this in proper style. Another question is should I use a /etc/yum.repos.d/jpackage.repo file with mirrorlist=http://www.jpackage.org/jpackage_fedora-4.txt in it to update my java packages under fc4 or is this update process done by the already installed /etc/yum.repos.d/fedora*.repo files? thanks Olaf