Hi,
Go to Configure -> Preferences -> Tools. Now you could see a Add button. Click it. You can see a menu option Java SDK Commands. Select them.
Now you can expand the Tools. Give ok.
It will take the $JAVA_HOME from the environment variable. So you have to set that variable.
After this you can start using CTRL+1 ( Compile ), CTRL+2 (Run Application), CTRL+3 (Run
Applet). You can also change these keys using Keyboard settings.
bye.