2019.9.21 java小知识

今天在做educoder

又给自己补了个漏洞

 1 class Employee {
 2     private String name;
 3     private String birth;
 4     private String position;
 5     public Employee(String name,String birth, String position){
 6         this.name = name;
 7         this.birth = birth;
 8         this.position = position;
 9     }
10     public String getName(){
11         return name;
12     }
13     public String getBirth(){
14         return birth;
15     }
16     public String getPosition(){
17         return position;
18     }
19 }
20 
21 class Salary extends Employee {
22     private double salary;
23     public Salary(String name, String birth, String position, double salary){
24         super(name, birth, position);
25         this.salary = salary;
26     }
27     public void introduction(){
28         System.out.print("员工姓名：" + this.name() + " 出生年月：" + this.birth + " 职位：" + this.position + " 薪水：" + this.salary);
29     }
30 }

在28行要调用父类的属性，会发现出现了错误

要调用父类的private属性必须要通过父类的方法

所以应该改为this.getName()。。。。