java学习笔记十二——多态

满足多态的基本条件

1、要有继承2、要有重写3、父类引用指向子类对象

/*

* 多态例子
*/

//定义游戏抽象类
abstract class gameObject {
String gameName;
abstract String getGameName();
}

//红警游戏
class redAlert extends gameObject {
String gameName = "red Alert";
String getGameName(){
return gameName;
}
}

//帝国时代游戏
class ageEmpires extends gameObject {
String gameName = "Age of Empres";
String getGameName(){
return gameName;
}
}

//玩游戏
class playGame {
void Play(gameObject game, String name){
System.out.println("玩家"+name+"在玩"+game.getGameName());
}
}

public class Test {
public static void main(String [] args){
playGame p1 = new playGame();
p1.Play(new redAlert(),"张三");
playGame p2 = new playGame();
p2.Play(new redAlert(),"李四");
p2.Play(new ageEmpires(),"李四");
}
}