练习1:(面向对象基础语法)写一个账户类(Account),属性:id:账户号码 长整数password:账户密码 字符串类型name:真实姓名 字符串类型identity:身份证号码 字符串类型email:客户的电子邮箱 字符串类型balance:账户余额 double
方法:deposit: 存款方法,参数是double型的金额withdraw:取款方法,参数是double型的金额
构造方法:有参和无参,有参构造方法用于设置必要的属性主方法测试你写的类
练习2:(封装)将Account类作成完全封装(将所有的属性用private修饰)
1 package com.firstweek.pratise2; Account { id; 5private String password; 6private String name; 7private String identity; 8private String email; balance; getId() {12return id;13 }setId(long id) {15this.id = id;16 }17public String getPasswordl() {18return password;19 } setPassword(String password) {21this.password = password;22 }23public String getName() {24return name;25 } setName(String name) {27this.name = name;28 }29public String getIdentity() {30return identity;31 } setIdentity(String identity) {33this.identity = identity;34 }35public String getEmail() {36return email;37 } setEmail(String email) {39this.email = email;40 } getBalance() {42return balance;43 }setBalance(double balance) {45this.balance = balance;46 }deposit(double amount) {49this.balance += amount;50 }withdraw(double amount); Account() {}Account(long id,String password,String name,String identity,57String email,double balance) {58this.id = id;59this.password = password;60this.name = name;61this.identity = identity;62this.email = email;63this.balance = balance;64 }65 },美国空间,服务器空间,香港服务器人生没有彩排,每天都是现场直播。