Search:

Please download the Netbeans JDK bundle. It should help fix your problem!

Download Java SE Development Kit 6u11 with NetBeans IDE 6.5 Bundle

Take a look at this link

"Hello World!" for Microsoft Windows (The Java™ Tutorials > Getting Started > The "Hello World!" Application)

Its a good tutorial about how to use Java in a command...

You need to go to:

Run > type cmd

Then you can type Java in the command window :)