多态及重写案例演示

缺乏、安全感 2022-05-27 09:59 195阅读 0赞

利用封装，继承，多态知识点汇集来解决Teatcher和Student不同行为的案例演示，代码如下:

/\*\*  
 \* 人类  
 \* @author Administrator  
 \*  
 \*/  
public  abstract class People \{  
private  String name;  
   private int age;  
     public  abstract void eat() ;  
     public void study() \{  
 System.out.println("学习了..");  
 \}

\----------------------------------

public class Student extends People \{  
@Override  
public void eat() \{  
// TODO Auto-generated method stub  
System.out.println("正在吃鸡");  
\}  
public void study() \{  
System.out.println("正在学习大数据...");  
\}  
/\*\*  
 \* 旅游  
 \*/  
public void travel() \{  
System.out.println("去叙利亚一日游...");  
\}

\-------------------------------------------------

public class Teacher extends People \{  
@Override  
public void eat() \{  
System.out.println("正在吃大龙呀");  
\}  
public void study() \{  
System.out.println("正在学习人工智能...");  
\}  
public void play() \{  
System.out.println("陪宝宝在玩耍");  
\}

\----------------------------------------------

public class Test \{  
public static void main(String\[\] args) \{  
//父类引用  变量名=new  具体的子类();  
//点看左 输出看右  
//创建一个数组 保存 2个人类的对象  
  People  tt=new Teacher();    
      People  ss=new Student();     
      People\[\] peoples=new People\[2\];  
       peoples\[0\]=ss;  
       peoples\[1\]=tt;    
       //循环来查看数组中2个对象的 属性和方法  
       for (People people : peoples) \{  
people.eat();  
//people.travel();  学生所特有的  
 //需要再输出 学生和老师的不同的方法  
 if ( people  instanceof Student) \{  
 Student  student= (Student) people;  
 student.travel();  
\}   
 if (people instanceof Teacher) \{  
   Teacher teacher=(Teacher) people;  
   teacher.play();  
\}   
\}

System.out.println("程序结束");