Combo Box

I need help in putting action in Combo Box.
I need to know how to access the index.
Or I could just get the string value if the index is highlighted.

In this example:



I need big help guys.
I tried getSource setSource and some stuffs. Couldn't get it to work to my liking.
getText won't work in my package.
I'm using Netbeans just so you know.

Help would be really be a savior. I'm going nuts with loads of projects.

 

Index: getSelectedIndex()
Item as a String: ((String) getSelectedItem())