What to Do If You Have the Wrong Java Runtime Environment

FitNesse requires version 1.5 or later of the Java Runtime Environment (JRE).
If you see the messages:

C:\fitnesse>java -jar fitnesse.jar
Exception in thread "main" java.lang.NoClassDefFoundError:
java/lang/CharSequence
at fitnesse.FitNesse.parseCommandLine(Unknown Source)
at fitnesse.FitNesse.main(Unknown Source)

C:\fitnesse>pause
Press any key to continue . . .

Then you need to download and install version 1.5 or later of the JRE. Follow these steps:

• Press a key to close the command window
• Go to this download link.
• Accept the terms of agreement (if you are permitted), and click Continue.
• Download the right JRE installer for your machine and operating system.
• Launch the installer, and follow its instructions to install JRE 1.5 or later.
• Change the PATH environment variable so that it points to the new JRE.
• Go to the /bin folder that contains java.exe, and copy the pathname (for example, C:\Program Files\Java\j2re1.5.0_13)
• Go to Settings>Control Panel>System>Advanced>Environment Variables>PATH>Edit
• Paste in that same complete pathname
• Save the PATH environment variable, and close the System control panel
• Double-click run.bat again.
• Return to DownloadingAndInstallingFitNesse.