get/set方法 private

package com.daxing_06;

//学生类
public class Student {
    //成员变量
    private String name;
    private int age;

    //get/set方法
    public void setName(String n) {
        name = n;
    }

    public String getName() {
        return name;
    }

    public void setAge(int a) {
        age = a;
    }

    public int getAge() {
        return age;
    }

    public void show() {
        System.out.println(name + "," + age);
    }
}

package com.daxing_06;

public class StudentDemo {
    public static void main(String[] args) {
        Student s = new Student();
        s.setAge(23);
        s.setName("大兴");
        s.show();
    }
}

大兴,23

Process finished with exit code 0