Can an activity have two implements?

问题

Can I implement OnClickListener and SurfaceHolder like this :

    public class MainActivity extends Activity implements SurfaceHolder.Callback,OnClickListener

回答1:

Yes, in Java a class can implement many different interfaces.

This compensates the lack of multiple inheritance in Java, as opposed to e.g. C++ where multiple inheritance is allowed.

来源：https://stackoverflow.com/questions/17507225/can-an-activity-have-two-implements