How do I add the Action overflow icon to an Activity class UI?

[AC Question]

Adding the Action overflow icon to an Activity class UI

If i extend my UI using ActionBarActivity or AppCompatActivity the overflow icon would automatically be added to my action bar. I am trying to do the same by extending the Activity class instead because I don't plan on developing apps for versions of Android below 3.0. However so far I have been unsuccessful. Is there to make the overflow icon appear using the Activity class or do I need to use a different class? Specifically one that isn't in the support library.