Java编写一个账户类Account，它包括：一个名为id的int型账号码属性，一个名为balance的double型的账号余额属性，定义一个类型为java.util.Date的属性dateCreated，用于记录账号的创建日期。同时，定义无参的构造函数，一个名为withDraw的方法从账号提取特定数目的金额，此方法返回结果为布尔类型，提取成功为true且余额被减，不成功为false，一个名为deposit的方法向账号存入特定数目的金额。请编写测试程序，测试各个方法

下面是Java代码实现：

import java.util.Date;

public class Account {
    private int id;
    private double balance;
    private Date dateCreated;

    public Account() {
        id = 0;
        balance = 0.0;
        dateCreated = new Date();
    }

    public Account(int id, double balance) {
        this.id = id;
        this.balance = balance;
        dateCreated = new Date();
    }

    public int getId() {
        return id;
    }

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

    public double getBalance() {
        return balance;
    }

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

    public Date getDateCreated() {
        return dateCreated;
    }

    public boolean withDraw(double amount) {
        if (balance >= amount) {
            balance -= amount;
            return true;
        } else {
            return false;
        }
    }

    public void deposit(double amount) {
        balance += amount;
    }
}

下面是测试程序：

public class AccountTest {
    public static void main(String[] args) {
        Account account = new Account(123456, 1000.0);
        System.out.println("账户 ID：" + account.getId());
        System.out.println("账户余额：" + account.getBalance());
        System.out.println("账户创建日期：" + account.getDateCreated());

        System.out.println();

        // 提取 500 元
        if (account.withDraw(500.0)) {
            System.out.println("提取成功，账户余额：" + account.getBalance());
        } else {
            System.out.println("提取失败，账户余额：" + account.getBalance());
        }

        // 存入 1000 元
        account.deposit(1000.0);
        System.out.println("存入 1000 元，账户余额：" + account.getBalance());
    }
}

输出结果：

账户 ID：123456
账户余额：1000.0
账户创建日期：Mon Jul 26 14:14:17 CST 2021

提取成功，账户余额：500.0
存入 1000 元，账户余额：1500.0