帮我写一个关于银行账户管理系统的Java代码，至少要有用户模块包括:登录模块、主菜单模块、存款模块、取款模块、转账模块和查询模块以及退出功能，管理员模块包括:添加用户功能、删除用户功能、查询所有用户基本信息功能、打印用户清单功能以及退出功能。

好的，我可以帮您写一个简单的银行账户管理系统的Java代码，代码如下：

import java.util.Scanner;

public class BankAccountManagementSystem {
    static int usersCount = 0; // 用户总数
    static User[] users = new User[100]; // 最多100个用户

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("欢迎使用银行账户管理系统！");
            System.out.println("请选择您的身份：");
            System.out.println("1. 用户");
            System.out.println("2. 管理员");
            System.out.println("3. 退出");
            int choice = scanner.nextInt();
            if (choice == 1) {
                userMenu(scanner);
            } else if (choice == 2) {
                adminMenu(scanner);
            } else if (choice == 3) {
                System.out.println("感谢使用银行账户管理系统！");
                break;
            } else {
                System.out.println("无效的选择，请重新选择！");
            }
        }
    }

    public static void userMenu(Scanner scanner) {
        User currentUser = login(scanner);
        if (currentUser == null) {
            System.out.println("登录失败！");
            return;
        }
        while (true) {
            System.out.println("欢迎使用银行账户管理系统，" + currentUser.name + "！");
            System.out.println("请选择您要的操作：");
            System.out.println("1. 存款");
            System.out.println("2. 取款");
            System.out.println("3. 转账");
            System.out.println("4. 查询余额");
            System.out.println("5. 退出");
            int choice = scanner.nextInt();
            if (choice == 1) {
                System.out.println("请输入存款金额：");
                double amount = scanner.nextDouble();
                currentUser.deposit(amount);
                System.out.println("存款成功！");
            } else if (choice == 2) {
                System.out.println("请输入取款金额：");
                double amount = scanner.nextDouble();
                if (currentUser.withdraw(amount)) {
                    System.out.println("取款成功！");
                } else {
                    System.out.println("余额不足，取款失败！");
                }
            } else if (choice == 3) {
                System.out.println("请输入转账金额：");
                double amount = scanner.nextDouble();
                System.out.println("请输入对方账号：");
                String targetAccount = scanner.next();
                User targetUser = findUserByAccount(targetAccount);
                if (targetUser == null) {
                    System.out.println("对方账号不存在，转账失败！");
                } else {
                    if (currentUser.transfer(targetUser, amount)) {
                        System.out.println("转账成功！");
                    } else {
                        System.out.println("余额不足，转账失败！");
                    }
                }
            } else if (choice == 4) {
                System.out.println("您的余额为：" + currentUser.balance);
            } else if (choice == 5) {
                System.out.println("感谢使用银行账户管理系统，" + currentUser.name + "！");
                break;
            } else {
                System.out.println("无效的选择，请重新选择！");
            }
        }
    }

    public static void adminMenu(Scanner scanner) {
        if (!adminLogin(scanner)) {
            System.out.println("登录失败！");
            return;
        }
        while (true) {
            System.out.println("欢迎使用银行账户管理系统，管理员！");
            System.out.println("请选择您要的操作：");
            System.out.println("1. 添加用户");
            System.out.println("2. 删除用户");
            System.out.println("3. 查询所有用户基本信息");
            System.out.println("4. 打印用户清单");
            System.out.println("5. 退出");
            int choice = scanner.nextInt();
            if (choice == 1) {
                addUser(scanner);
                System.out.println("添加用户成功！");
            } else if (choice == 2) {
                deleteUser(scanner);
                System.out.println("删除用户成功！");
            } else if (choice == 3) {
                listAllUsers();
            } else if (choice == 4) {
                printUserList();
            } else if (choice == 5) {
                System.out.println("感谢使用银行账户管理系统，管理员！");
                break;
            } else {
                System.out.println("无效的选择，请重新选择！");
            }
        }
    }

    // 登录
    public static User login(Scanner scanner) {
        System.out.println("请输入账号：");
        String account = scanner.next();
        System.out.println("请输入密码：");
        String password = scanner.next();
        for (int i = 0; i < usersCount; i++) {
            if (users[i].account.equals(account) && users[i].password.equals(password)) {
                return users[i];
            }
        }
        return null;
    }

    // 管理员登录
    public static boolean adminLogin(Scanner scanner) {
        System.out.println("请输入管理员账号：");
        String account = scanner.next();
        System.out.println("请输入管理员密码：");
        String password = scanner.next();
        return account.equals("admin") && password.equals("admin");
    }

    // 根据账号查找用户
    public static User findUserByAccount(String account) {
        for (int i = 0; i < usersCount; i++) {
            if (users[i].account.equals(account)) {
                return users[i];
            }
        }
        return null;
    }

    // 添加用户
    public static void addUser(Scanner scanner) {
        System.out.println("请输入用户姓名：");
        String name = scanner.next();
        System.out.println("请输入账号：");
        String account = scanner.next();
        System.out.println("请输入密码：");
        String password = scanner.next();
        User newUser = new User(name, account, password);
        users[usersCount++] = newUser;
    }

    // 删除用户
    public static void deleteUser(Scanner scanner) {
        System.out.println("请输入要删除的用户账号：");
        String account = scanner.next();
        for (int i = 0; i < usersCount; i++) {
            if (users[i].account.equals(account)) {
                for (int j = i; j < usersCount - 1; j++) {
                    users[j] = users[j + 1];
                }
                usersCount--;
                break;
            }
        }
    }

    // 查询所有用户基本信息
    public static void listAllUsers() {
        for (int i = 0; i < usersCount; i++) {
            System.out.println("姓名：" + users[i].name + "，账号：" + users[i].account);
        }
    }

    // 打印用户清单
    public static void printUserList() {
        System.out.println("姓名\t账号\t密码\t余额");
        for (int i = 0; i < usersCount; i++) {
            System.out.println(users[i].name + "\t" + users[i].account + "\t" + users[i].password + "\t" + users[i].balance);
        }
    }
}

class User {
    String name; // 姓名
    String account; // 账号
    String password; // 密码
    double balance = 0.0; // 余额

    public User(String name, String account, String password) {
        this.name = name;
        this.account = account;
        this.password = password;
    }

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

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

    // 转账
    public boolean transfer(User targetUser, double amount) {
        if (balance >= amount) {
            balance -= amount;
            targetUser.balance += amount;
            return true;
        } else {
            return false;
        }
    }
}

您可以将代码保存为 `BankAccountManagementSystem.java` 文件，然后在命令行中编译并运行该程序，即可体验银行账户管理系统。