This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma 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.