Clearing The Java Cache in Windows Vista or XP

1. Select Start in Windows XP or The Start Orb in Windows Vista
2. Click Control Panel  (Make sure you have selected Classic View on the Left side of the window.)
3. Double-click on the Java icon. 
4. Click on Settings
5. Click on Delete Files...
6. Click the OK
7. Restart your computer.

You have now cleared the Cache for Java in your system