学习练习 java面向对象存取款查询余额

 package com.hanqi;

 public class Account {

     String ZhangHao;

     double CunKuanYuE;

     Account(String ZhangHao,double CunKuanYuE)
     {
         //初始化
         this.ZhangHao = ZhangHao;
         this.CunKuanYuE = CunKuanYuE;
     }

     //存款
     //无返回值带参数的方法
     void cunKuan (double qianshu)
     {
         System.out.println("存了" + qianshu);
         this.CunKuanYuE += qianshu;
     }

     //取款
     //无返回值带参数的方法
     void quKuan (double qianshu)
     {
         System.out.println("取了" + qianshu);
         this.CunKuanYuE -= qianshu;
     }
     //查询余额
     //有返回值无参数的方法

     double getYuE()
     {
         return this.CunKuanYuE;
     }

     public static void main(String[] args)
     {
         Account ac = new Account("123456",1000);

         ac.cunKuan(100);
         System.out.println("查询余额=" + ac.getYuE());

         ac.quKuan(300);
         System.out.println("查询余额=" + ac.getYuE());

     }

 }