Why do I get an error message when I try to compile or run an example? Check out Common Problems (and Their Solutions).
I already have the JRE. Why do I need the JDK? The Java SE Runtime Environment, or JRE, allows you to run programs that have already been compiled and deployed. We hope you will use the Tutorials to expand your understanding of Java technology by modifying and extending the examples. To do this, you need the JDK.
I'm just not ready to upgrade to the latest JDK. Can I get the old Tutorials? You can get the old tutorials from the