This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
you must use the absolute path or the relative path of the properties file. remember, if you are executing p1.p2.A.class then your class could be in c:\p1\p2 folder, but you will be executing it from c:\ so the path of the properties file should be either absolute path or relative path to c:\