An enclosing instance that contains is required

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You’re trying to use the non-static inner positionObj class without an instance of Secretary for it to belong to.
A non-static inner class must belong to an instance of its parent class

You should probably change positionObj to a normal class or a static inner class.

Alternatively, you can write someSecretary.new positionObj() to create an instance of the inner class that belongs to the someSecretary instance.

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