Learn how to use the Command pattern to encapsulate requests as objects that you can execute alone or in sequence in your Java programs.

But to use Command Prompt, you'll need to know the commands for it. Here are some of the most useful commands, along with explanations of what they'll do.

Need to disassemble a Java class file? Want to look at the bytecode instructions generated from compiling source? These javap tool examples will show you how to use the javap command properly.