This tutorial demonstrates how you can check whether you have Java installed on your computer and if the version you have is the latest.
It has been produced as a tutorial for the Online Statistics Education: An Interactive Multimedia Course of Study project at http://onlinestatbook.com/ although you can use it with any development that uses Java.
If you got here because you are receiving the error "Application Blocked by Security Settings - Your security settings have blocked an untrusted application from running" when you try to run Java code then check my other video on the subject.