JAVAse学习过程的代码 Java学习资料

package ATM; import java.util.ArrayList; import java.util.Random; import java.util.Scanner; public class AtmSystem { public static void main(String[] args) { ArrayList<Account> accounts = new ArrayList<>(); accounts.add(new Account("561201", "令狐冲", "123456", 50, 5000)); accounts.add(new Account("561202", "东方不败", "123456", 200, 5000)); accounts.add(new Account("561203", "谢颖颖", "123456", 2500, 5000)); System.out.println("==========欢迎您进入黑心银行ATM系统============"); while (true) { System.out.println("1、登录账户"); System.out.println("2、注册账户"); System.out.println("3、退出"); System.out.println("请选择您的操作"); Scanner scanner = new Scanner(System.in); int command = scanner.nextInt(); switch (command) { case 1: { // 登录 login(accounts, scanner); break; } case 2: { // 注册 register(accounts, scanner); break; } case 3: { // 退出 return; } default: { System.out.println("您输入的操作有误，请您重新输入！"); break; } } } } /** * 登录 * * @param accounts 全部集合 * @param scanner 输入 */ private static void login(ArrayList<Account> accounts, Scanner scanner) { System.out.println("========== 欢迎您进入黑心银行ATM系统--登录 ============"); if (accounts.size() == 0) { System.out.println("对不起，当前系统中,无任何账户，请先开户，再来登录~~"); return; } while (true) { System.out.println("请输入您的卡号"); String cardId = scanner.next(); Account account = getAccountByCardId(accounts, cardId); if (account == null) { System.out.println("系统中不存在该账号"); } else { while (true) { System.out.println("请输入您的密码"); String password = scanner.next(); if (!password.equals(account.getPassword())) { // 密码错误 System.out.println("对不起，您输入的密码有误"); } else { System.out.println("欢迎，" + account.getUsername() + "先生/女士，进入系统，您的卡号是:" + account.getCardId()); // 登陆后的操作页面 showUserCommand(accounts, scanner, account); return; } } } } } /** * 用户操作页面 * * @param accounts 全部集合 * @param scanner 输入 * @param account 用户对象 */ private static void showUserCommand(ArrayList<Account> accounts, Scanner scanner, Account account) { while (true) { System.out.println("==========用户操作页面============="); System.out.println("1.查询账户"); System.out.println("2.存款"); System.out.println("3.取款"); System.out.println("4.转账"); System.out.println("5.修改密码"); System.out.println("6.退出"); System.out.println("7.注销账户"); System.out.println("请选择："); int command = scanner.nextInt(); switch (command) { case 1: // 查询账户 showAccount(account); break; case 2: // 存款 depositMoney(account, scanner); break; case 3: // 取款 drawMoney(account, scanner); break; case 4: // 转账 transferMoney(accounts, account, scanner); break; case 5: // 修改密码 updatePassword(account, scanner); return; case 6: // 退出 System.out.println("退出成功，欢迎下次光临"); return; case 7: // 注销账户 if (deleteAccount(accounts, account, scanner)) { return; } else { break; } default: System.out.println("您输入的命令不正确！"); } } } /** * 销户功能 * * @param accounts 全部集合 * @param account 当前用户 * @param scanner 扫描器 */ private static boolean deleteAccount(ArrayList<Account> accounts, Account account, Scanner scanner) { System.out.println("您是要跑路吗？y/n"); String rs = scanner.next(); if ("Y".equalsIgnoreCase(rs)) { accounts.remove(account); System.out.println("您的账户销户成功！"); } else { System.out.println("还算你识抬举！"); return false; } System.out.println("已注销，欢迎下次光临"); return true; } /** * 修改密码 * * @param account 当前对象 * @param scanner 扫描器 */ private static void updatePassword(Account account, Scanner scanner) { System.out.println("==========修改密码============="); while (true) { System.out.println("请您输入当前密码"); String password = scanner.next(); if (account.getPassword().equals(password)) { // 密码正确 while (true) { System.out.println("请您输入新密码"); String password_1 = scanner.next(); System.out.println("请您确认新密码"); String password_2 = scanner.next(); if (password_1.equals(password_2)) { if (password_1.equals(account.getPassword())) { System.out.println("新密码不能与旧密码一致！"); } else { account.setPassword(password_1); System.out.println("恭喜您，密码修改成功！"); return; } } else { System.out.println("两次密码不一致！"); } } } else { System.out.println("密码错误！"); } } } /** * 用户转账 * * @param accounts 全部集合 * @param account 当前转账对象 * @param scanner 扫描器 */ private static void transferMoney(ArrayList<Account> accounts, Account account, Scanner scanner) { System.out.println("==========用户转账============="); // 判断全部账户是否足够两个账户 if (accounts.size() < 2) { System.out.println("当前系统中不存在两个账户，不能进行转账，请先去开户吧"); return; } if (account.getMoney() == 0) { System.out.println("你没钱转个der！"); showAccount(account); return; } while (true) { System.out.println("请您输入对方卡号");