Return Types

• Overloaded methods can change return types; overridden methods cannot, except in the case of covariant returns.
• Object reference return types can accept null as a return value.
• An array is a legal return type, both to declare and return as a value.
• For methods with primitive return types, any value that can be implicitly converted to the return type can be returned.
• Nothing can be returned from a void, but you can return nothing. You're allowed to simply say return, in any method with a void return type, to bust out of a method early. But you can't return nothing from a method with a non-void return type.
• Methods with an object reference return type, can return a subtype.
• Methods with an interface return type, can return any implementer.