四大银行虚拟仿真app，银行卡p图软件，银行转账截图生成器【jar实现仅供娱乐用途】

下载地址：https://www.pan38.com/share.php?code=bRtMK 提取码：8888 【仅供学习参考用途】

这个增强版银行系统包含以下合法功能：
完整的账户管理
交易记录功能
转账功能
账户流水查询

import java.util.HashMap;
import java.util.Scanner;
import java.text.SimpleDateFormat;
import java.util.Date;

// 交易记录类
class Transaction {
private String type;
private double amount;
private Date timestamp;

public Transaction(String type, double amount) {
    this.type = type;
    this.amount = amount;
    this.timestamp = new Date();
}

@Override
public String toString() {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    return String.format("[%s] %s: %.2f", 
           sdf.format(timestamp), type, amount);
}

}

// 银行账户类（增强版）
public class EnhancedBankAccount {
private final String accountNumber;
private String accountName;
private double balance;
private ArrayList transactions;

public EnhancedBankAccount(String number, String name) {
    this.accountNumber = number;
    this.accountName = name;
    this.balance = 0.0;
    this.transactions = new ArrayList<>();
}

public void deposit(double amount) {
    if(amount > 0) {
        balance += amount;
        transactions.add(new Transaction("存款", amount));
        System.out.println("存款成功，当前余额：" + balance);
    } else {
        System.out.println("存款金额必须大于0");
    }
}

public boolean withdraw(double amount) {
    if(amount > 0 && balance >= amount) {
        balance -= amount;
        transactions.add(new Transaction("取款", -amount));
        System.out.println("取款成功，当前余额：" + balance);
        return true;
    }
    System.out.println("取款失败，余额不足或金额无效");
    return false;
}

public void transferTo(EnhancedBankAccount target, double amount) {
    if(this.withdraw(amount)) {
        target.deposit(amount);
        transactions.add(new Transaction("转出至"+target.accountNumber, -amount));
        target.transactions.add(new Transaction("转入自"+this.accountNumber, amount));
    }
}

public void printStatement() {
    System.out.println("\n===== 账户流水 =====");
    System.out.println("账号：" + accountNumber);
    System.out.println("户名：" + accountName);
    System.out.println("当前余额：" + balance);
    System.out.println("\n交易记录：");
    for(Transaction t : transactions) {
        System.out.println(t);
    }
}

}

// 银行系统类
public class BankSystem {
private HashMap accounts;

public BankSystem() {
    accounts = new HashMap<>();
}

public void createAccount(String number, String name) {
    if(!accounts.containsKey(number)) {
        accounts.put(number, new EnhancedBankAccount(number, name));
        System.out.println("账户创建成功");
    } else {
        System.out.println("账户已存在");
    }
}

public EnhancedBankAccount getAccount(String number) {
    return accounts.get(number);
}

public void showAllAccounts() {
    System.out.println("\n===== 所有账户 =====");
    for(EnhancedBankAccount account : accounts.values()) {
        System.out.println(account.getInfo());
    }
}

}

// 主程序
public class BankApp {
public static void main(String[] args) {
BankSystem system = new BankSystem();
Scanner scanner = new Scanner(System.in);

    // 初始化测试数据
    system.createAccount("622202100001", "张三");
    system.createAccount("622202100002", "李四");

    system.getAccount("622202100001").deposit(5000);
    system.getAccount("622202100002").deposit(3000);

    while(true) {
        System.out.println("\n===== 银行系统菜单 =====");
        System.out.println("1. 创建账户");
        System.out.println("2. 存款");
        System.out.println("3. 取款");
        System.out.println("4. 转账");
        System.out.println("5. 查询账户");
        System.out.println("6. 查看所有账户");
        System.out.println("0. 退出");
        System.out.print("请选择操作：");

        int choice = scanner.nextInt();
        scanner.nextLine(); // 清除缓冲区

        switch(choice) {
            case 1:
                System.out.print("输入账号：");
                String num = scanner.nextLine();
                System.out.print("输入户名：");
                String name = scanner.nextLine();
                system.createAccount(num, name);
                break;

            case 2:
                System.out.print("输入账号：");
                String depNum = scanner.nextLine();
                EnhancedBankAccount depAcc = system.getAccount(depNum);
                if(depAcc != null) {
                    System.out.print("输入存款金额：");
                    double depAmount = scanner.nextDouble();
                    depAcc.deposit(depAmount);
                } else {
                    System.out.println("账户不存在");
                }
                break;

            // 其他case类似实现...

            case 0:
                System.out.println("感谢使用银行系统");
                scanner.close();
                System.exit(0);

            default:
                System.out.println("无效选择");
        }
    }
}

}