Table of Contents > Setting Up JES> Troubleshooting
Troubleshooting
Look here for help with installing and running the technology required for this course. If you're having technical problems and can't find what you're looking for here, you should see your TA.

Q. I'm trying to install Jython, but when I type java Jython-21, it tells me the file is missing!

Make sure that you have changed to the correct directory. If you are not in the directory that contains the Jython-21.class file, then the computer won't be able to find the file! Remember, if you want to check what files are present in the current directory, type ls on Mac and Linux, and dir on Windows.
 
Q. I'm trying to install Jython, but when I type java Jython-21, it tells me that java is not a command!
This could happen if you installed java someplace other than the place specified in the instructions. Try uninstalling java and reinstalling it in the proper location.

If you believe that your java files are in the right place, then something may have prevented your path from being set correctly. Your "path" is what tells the computer where to look for programs when you type a command. When you installed Java, you may have put it in a place where the computer isn't looking. If that happened, then your computer can't recognize "java" as a command. The solution is to modify your path to include the location where Java is installed. See help for modifying the path.