> Package Manager reports (with a green checkmark) that I have java-1.6.0 > installed on my machine (running Cent 5.3), but it seems to not be > running. I used http://java.com/en/download/help/testvm.xml and got > "Something is wrong. Java is not working." This page tell you that the Java browser plugin is not working (it is used to run small Java applets *in* the browser it self). The Java browser plugin is not shipped with the CentOS version of open jdk. Do you need this brower plugin? Are you running i386 or x86_64 ? You said that you are running 5.3, any reason why not updating to 5.4? (if it is a desktop) > > Perhaps I'm confused on which program I need to use java-coded apps. PM > lists this app as "OpenJDK Runtime Environment" - is this it? > > [mykolas at sr1220 ~]$ rpm -q jdk jre > package jdk is not installed > package jre is not installed What is the output of: yum list java-1.6.0-openjdk*