3일차 Person 인터페이스 (클래스 상속, 인터페이스 상속, 추상 메소드)

 interface Person

{

         // 말하기

         public void speak();

        

         // 일하기

         public void work();

}

class Student implements Person

{

         @Override

         public void speak()

        {

                System. out.println("말하기" );

        }

         @Override

         public void work()

        {

                System. out.println("일하기" );

        }

        

}

public class Exam03 implements Person

{

         public static void main(String [] args)

        {

                Student choi = new Student ();              

                // choi.speak();

                // choi.work();

               

                Exam03 e03 = new Exam03();

                e03.speak();

                e03.work();

        }

         @Override

         public void speak()

        {

                System. out.println("말하기2" );

        }

         @Override

         public void work()

        {

                System. out.println("일하기2" );

        }

}