You will get that main not found error from any Java application if it cant find your .class files, for instance in a DOS shell if you typed
java xyz
or
javaw xyz
So make sure your default directory is the same place as all the .class files, or if running from a shortcut edit the "START IN" property of the windows shortcut. If you post more details on the location of your files, the output you see for entering "java -version", and the output you see for entering "java FADProgress" in the same dir as the .class files, we can assist.