Android : java multiple inheritance ActionBarActivity

I've got a class (it's my main activity) that already extends other class:

public class AdvancePreferences extends Preferences 

I would like to use v7 ActionBar. According to this site: https://developer.android.com/training/basics/actionbar/setting-up.html I need to extend ActionBarActivity. It looks like I need multiple inheritance here:

public class AdvancePreferences extends Preferences extends ActionBarActivity

How can I resolve this problem? I do not want to lose Preferences feature.