Summary: How to configure your shell to use the Sun JDK on the MathLAN machines.

Steps

1. Open the file ~/.bashrc in your favorite text editor
2. Somewhere near the end, but before any final export commands, add the following lines:

   JAVA_HOME=/usr/lib/jvm/java-1.5.0-sun
   PATH=$JAVA_HOME/bin:$PATH
   

3. If there is already a line with an export command near the end, make sure the environment variable PATH is among the parameters, and also add JAVA_HOME to the list. In other words, there may be other variables listed, but be sure after the declarations listed in step 2, you have a line like the following:

   export PATH JAVA_HOME

4. Do the same thing to your ~/.bash_profile (you may have already done this in class).
5. The next time you log in to MathLAN, you should see output something like the following:

   laplace:~$ which javac
   /usr/lib/jvm/java-1.5.0-sun/bin/javac