is "this" a static variable ?

if i try to use this from my main it will say "this" is not a static variable.

when i have a inner class and want the reference of the outer class, i use OuterClassName.this to get the reference.

Is this scenario an exception ? is my understanding correct ?

No, that's not a static variable. That's just a special syntax that allows you to get a reference to the enclosing class.

If it was a static variable, it would have the same value regardless of which object you were in, but it doesn't. It refers to the specific instance of OuterClassName that contains the current object.

Instead use an object like this in your class

OtherClass instance = new OtherClass();
you can use the instance variable