this使用

package com.encapsulation;

public class Student {
    private double score;

    public void setSore(double score){
        if (score>=0 && score<=100){
            this.score=score;
        }else {
            System.out.println("数据非法");
        }
    }
    public double getScore(){
        return score;
    }
    public void printPass(){
        System.out.println(score>=60?"成绩合格":"成绩不合格");
    }
}

package com.encapsulation;

public class Test {
    public static void main(String[] args) {
        Student s1=new Student();
        s1.setSore(99);
        System.out.println(s1.getScore());
    }
}