2019.9.21 java小知识

今天在做educoder

又给自己补了个漏洞

class Employee {
    private String name;
    private String birth;
    private String position;
    public Employee(String name,String birth, String position){
        this.name = name;
        this.birth = birth;
        this.position = position;
    }
    public String getName(){
        return name;
    }
    public String getBirth(){
        return birth;
    }
    public String getPosition(){
        return position;
    }
}

class Salary extends Employee {
    private double salary;
    public Salary(String name, String birth, String position, double salary){
        super(name, birth, position);
        this.salary = salary;
    }
    public void introduction(){
        System.out.print("员工姓名：" + this.name() + " 出生年月：" + this.birth + " 职位：" + this.position + " 薪水：" + this.salary);
    }
}

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()。。。。