/*功能：Java"封装"的典型例子*/public class Demo3_5{    public static void main(String args[]){        Clerk clerk1=new Clerk("qingfeng",22,5321.12f);        System.out.println("名字为"+clerk1.name+"薪资为"+clerk1.getSalary());//只能通过授权的操作（成员方法）进行访问            }}class Clerk{    public String name ;    private int age;    private float salary;    //构造方法    public Clerk(String name, int age, float sal){        this.name = name;        this.age = age;        this.salary = sal;    }    //成员方法    public float getSalary(){        return this.salary;    }}