What is ClassName.this?

Question

I know this refers to the current object. I am little confused about this.ClassName and ClassName.this when creating Intent.

Possibly related to `ClassName.this`: [Getting hold of the outer class object from the inner class object](https://stackoverflow.com/questions/1816458/getting-hold-of-the-outer-class-object-from-the-inner-class-object) — Pshemo, Aug 11 '17 at 14:21

Stephen C · Accepted Answer · 2021-01-04T12:17:54.767

I am little confused about this.ClassName and ClassName.this when creating Intent.

The Classname.this syntax is used to refer to an outer class instance when you are using nested classes; see Using "this" with class name for more details.

However this.Classname is a compilation error ... unless you have declared an instance (or static) field with the name Classname. (That would be a daft thing to do, as well as being an egregious style violation.)

score 3 · Answer 2 · answered Aug 11 '17 at 14:22

Intent intent=new Intent(context, AcitivityName.class);

The first argument is just the context so when you write for ex. Main.this you are just referring to the context of that activity.

The second argument is the a Activity you want to start or whatever...

score 2 · Answer 3 · answered Aug 11 '17 at 14:32

I'm assuming ClassName is just filling in for the current class's name. ClassName.this is exactly the same as simply writing this. So if a class had a variable called foo you could reference it from that class using ClassName.this.foo the same way you could with this.foo.

this.ClassName is not valid java as far as I know.

What is ClassName.this?

3 Answers3