A class can inherit methods, properties, and other characteristics from another class. When one class inherits from another, the inheriting class is known as a subclass, and the class it inherits from is known as its superclass. A class that does not inherit from another class is known as a base class. 클래스는 메소드, 프로퍼티, 다른 자료형들을 상속받을 수 있는데 상속 받은 클래스를 subClass라고 하고, 상속을 준 클래스를 superClass라고 한다! 그럼 상..