Java作业1012

Account

+ id:账号+ balance:余额+ annualIntegerRate:年利率+ dateCreated:开户日期

+ serAnnualIntegerRate(double annualIntegerRate):设置年利率+ getAnnualIntegerRate():获取年利率+ getBalance():获取余额+ withDraw(double money):取钱+ deposit(double money):存钱+ toString():显示信息

CheckingAccount

+ limit

+ getLimit():获取透支额度+ setLimit():设置透支额度+ withDraw(double money):取钱+ toString():显示信息

SavingAccount

+ toString():显示信息