编写Java程序
该类的属性和方法如下所示。
该类包括的属性：账户id，余额balance，年利率annualInterestRate；
包含的方法：各属性的set和get方法。取款方法withdraw()，存款方法deposit()
写一个测试程序
（1）创建一个Customer，名字叫Jane Smith，他有一个账号为1000，余额为2000，年利率为1.23%的账户
（2）对Jane Smith操作：
存入100元，再取出960元，再取出2000。
打印Jane Smith的基本信息
信息如下显示：
成功存入：100
成功取出：960
余额不足，取钱失败
Customer [Smith，Jane] has a account ：id is 1000 annualInterestRate is 1.23% balance is 1140.0
//账户类 class Account{ private String id; private double balance; private double annualInterestRate; //无参构造 public Account(){ } //有参构造 public Account(String id,double balance,double annualInterestRate){ this.id=id; this.balance=balance; this.annualInterestRate=annualInterestRate; } public void setId(String id){ this.id=id; } public String getId(){ return id; } public void setBalance(double balance){ this.balance=balance; } public double getBalance(){ return balance; } public void setAnnualInterestRat(double annualInterestRate){ this.annualInterestRate=annualInterestRate; } public double getAnnualInterestRate(){ return annualInterestRate; } //取款 public void withdraw(double money){ if(money > getBalance()){ System.out.println("余额不足，取钱失败"); return; } this.setBalance(this.getBalance() - money); System.out.println("成功存入："+money); } //存款 public void deposit(double money){ this.setBalance(this.getBalance()+ money); System.out.println("成功存入："+money); } }
//客户 class Customer{ //名字 private String name; //客户有一个账户才能存取钱 Account act; public Customer(){ } public Customer(String name,Account act){ this.name=name; this.act=act; } public void setName(String name){ this.name=name; } public String getName(){ return name; } public void setAct(Account act){ this.act=act; } public Account getAct(){ return act; } }
public class Text{ public static void main(String[] args){ Account a=new Account("1000",2000,1.23); Customer c1=new Customer("Jane Smith",a); c1.getAct().deposit(100); //人有一个账户存取钱 c1.getAct().withdraw(960); c1.getAct().withdraw(2000); } }
