5.8 继承与多态

5.8 继承与多态

多态性指父类的某个方法被其子类重写的时候，可以产生自己的功能行为

//例子：
public class Exmaple5_11_Animal {
	void cry() {

	}
}

public class Exmaple5_11_Cat extends Exmaple5_11_Animal {
	void cry() {
		System.out.println("喵······");
	}
}

public class Exmaple5_11_Dog extends Exmaple5_11_Animal {
	void cry() {
		System.out.println("汪······");
	}
}


public class Exmaple5_11 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Exmaple5_11_Cat cat = new Exmaple5_11_Cat();
		cat.cry();
		Exmaple5_11_Dog dog = new Exmaple5_11_Dog();
		dog.cry();
	}

}

//输出结果：
//喵······
//汪······