I installed Java (jre1.5.0_04) and then went to the /usr/lib/mozilla-1.7.8/plugins directory and did a ln -s /usr/java/jre1.5.0_04/plugin/i386/ns7/libjavaplugin_oji.so and the link was created. When I try and run a Java app though it says the plugin is not installed. Java is enabled in the browser as well.