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class Animal { public void move() { System.out.println("Animals can move"); } } class Dog extends Animal { public void move() { super.move(); // 调用父类的方法 System.out.println("Dogs can walk and run"); } } public class TestDog { public static void main(String args[]) { Animal b = new Dog(); b.move(); } }
运行结果 :
正在执行...