Extends - #17
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- Parant 클래스를 호출하지 않았는데도 부모 클래스의 기본 생성자가 호출 된다. - 자식 클래스에 구현하지 않았는데도 부모 클래스에 있는 printName() 메소드를 자식 클래스에서 사용할 수 있다. > 출력 결과 Parent Constructor Child Constructor Parent printName()
…사용함. > 출력 결과 Parent Constructor Child Constructor Parent printName() Parent printProtectedName()
> 출력 결과 [Overriding 전] ParentArg(ChildArgName ~~~ ) Constructor Child Constructor ParentArg printName() [Overriding 후] ParentArg(ChildArgName ~~~ ) Constructor Child Constructor ChildArg printName() Overriding
왜냐하면, 자식에게만 존재하는 변수나 메서드가 있는데, 이를 부모로부터 참조할 수 없으므로,
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