This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
If you keep classes in separate directory trees, then you need to add all of them to the classpath, like java -classpath H:\J\A\;H:\J\B UseTest. You can't specify any directory as part of the class name.