面向对象小练习 顾客与账户练习

要求：

代码：

package com.base;
/*
*3.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 元，
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 元。
打印出 Jane Smith 的基本信息

* */
//test:
public class Demo37 {
    public static void main(String[] args) {
        Customers c = new Customers("Jane","Smith");
        Account a = new Account(1000,2000,0.0123);
        c.setAccount(a);//创建顾客的账户！！
        c.getAccount().deposit(100);
        c.getAccount().withdraw(960);
        c.getAccount().withdraw(2000);
        System.out.println("Customer["+c.getLastName()+","+c.getFirstName()+
                "] has a account:id is"+c.getAccount().getId()+",annuallnterestRate is "+
                c.getAccount().getAnnualInterestRate()*100+"%,balance is "+c.getAccount().getBalance());


    }
}

class Account{
    private int id;//账号
    private double balance;//余额
    private double annualInterestRate;//年利率

    public Account (int id, double balance, double annualInterestRate ){
        this.id = id;
        this.balance = balance;
        this.annualInterestRate = annualInterestRate;
    }

    public void setId(int id) {
        this.id = id;
    }

    public int getId() {
        return id;
    }

    public void setBalance(double balance) {
        this.balance = balance;
    }

    public double getBalance() {
        return balance;
    }

    public void setAnnualInterestRate(double annualInterestRate) {
        this.annualInterestRate = annualInterestRate;
    }

    public double getAnnualInterestRate() {
        return annualInterestRate;
    }
    //取钱
    public void withdraw (double amount){
        if(balance < amount){
            System.out.println("余额不足，取款失败");
            return;
        }
        balance -= amount;
        System.out.println("成功取出："+amount);
    }
    //存钱
    public void deposit (double amount){
        this.balance += amount;
        System.out.println("成功存入："+amount);
    }

}


class Customers{
    private String firstName;
    private String lastName;
    private Account account;

    public Customers(String f,String l){
        this.firstName = f;
        this.lastName = l;
    }
    public String getFirstName(){
        return firstName;
    }
    public String getLastName(){
        return lastName;
    }
    public Account getAccount(){
        return account;
    }
    public void setAccount(Account account){
        this.account = account;
    }


}

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