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I have a listener inside Class A, and I want to pass Class A to my Class B inside the listener. Normally I'd just use this, but then I'd get the event that triggered the listener.
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If you want your inner class to access outer class instance variables then in the constructor for the inner class, include an argument that is a reference to the outer class instance. The outer class invokes the inner class constructor passing this as that argument.
Non-static nested classes (inner classes) have access to other members of the enclosing class, even if they are declared private. Static nested classes do not have access to other members of the enclosing class.
In general you use OuterClassName. this to refer to the enclosing instance of the outer class.
Unlike inner class, a static nested class cannot access the member variables of the outer class. It is because the static nested class doesn't require you to create an instance of the outer class.
A.this.
(It is rare that the inner class this is useful. Indeed it is relatively common to have bugs where the wrong this was used. So it is unfortunate that it is the default. Not about to change after 12 years.)
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