Java与C++的多态

没有必要用一堆绕口的形容词来描述什么叫多态，只举出几个关键点。
    设：gun为父类，shootgun和pistol为gun的子类。
    Java:
    class gun {
        void shoot() {
            System.out.println("gun shoot");
        }
    }
    class shootgun extends gun {
        void shoot() {
            System.out.println("shootgun shoot");
       }
    }
    class pistol extends gun {
       void shoot() {
            System.out.println("pistol shoot");
        }
    }
    C++:
    class gun
    {
        void shoot()
        {
            cout << "gun shoot" << endl;
        }
    };
    class shootgun : gun
    {
        void shoot()
        {
            cout << "shootgun shoot" << endl;
        }
    };
    class pistol : gun
    {
        void shoot()
        {
            cout << "pistol shoot" << endl;
      &n