I believe this is a path issue. You may need to add javac and java to your path. This process differs depending on your shell and the location of the jdk install, but if you are using bash or sh derived shell try this.
This all assumes you have java installed, wise guy question but had to ask. To make this change permanent you will need to edit one of the following files and add the above line/or edit a similar line already in the file. ~/.bash_profile~/.bashrc~/.profileYou may also want to export a CLASSPATH variable to include "." thats dot aka current working directory.