What is the applicationcontext in makeTest() Method, please explain with the following snippet

Toast.makeTes开发者_StackOverflow中文版t(HelloGridView.this,"Text to be displayed",Toast.LENGTH.SHORT).show();

What is the 'HelloGridView.this' refers? why it is called as appliactioncontext?

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It's called context because HelloGridView.this (Activity class) extends the Context class (not directly, but it extends another class, which extends another, which in turn extends the Context class).

It's a grand grand child of the Context class.