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I am learning android and I am newbie. I encountered a code i.e. 

FramgmentManager fm = getFragmentManager();

I know that getFragmentManager() is a method defined in Activity class.

In java we access method through object reference that is obj.method() but here how can we call getFragmentMananger without any object refrence

Zameer Ansari
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Vipin Dubey
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1 Answers1

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In your case there is an 'automatic' this reference meaning that your method is called on the enclosing object you're using right now (an Activity).

Zielony
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  • and what about method setContentView().Is this method same as this.setcContentView() – Vipin Dubey Dec 29 '15 at 16:39
  • class student{ String hello(){ return "aaaaa"; } } public class Dell extends student{ public static void main(String[] args) { System.out.println("...."); String a= hello(); } } bur here why it is error in line...String a=hello(); why it cant be this.hello(); – Vipin Dubey Dec 29 '15 at 16:59
  • In a static method, like main, there is no `this` to refer to. – Louis Wasserman Dec 29 '15 at 17:21