**********银行管理系统

package com.company; import java.lang.annotation.ElementType; import java.net.SocketTimeoutException; import java.util.Scanner; /* * 账户菜单类 * */ public class AccountMenu { private Scanner input=new Scanner(System.in); protected Account account; protected AccountMenu(){ } protected AccountMenu(Account account){ this.account=account; } //显示账户主菜单 public void showMainMenu(){ System.out.println("*****************************"); System.out.println("1.存款\t2.取款\t3.查询余额\t4.转账\t5.贷款\t6.还款\t7.修改密码\t8.注销" ); System.out.println("*************************"); System.out.println("请选择："); int chice=input.nextInt(); switch (chice){ case 1: //存款 deposit(); break; case 2: //取款 withdraw(); break; case 3: //查询余额 queryBalance(); break; case 4: //转账 transfer(); break; case 5: //贷款 requestLoan(); break; case 6: //还贷 payLoan(); break; case 7: //修改密码 modifyPassword(); break; case 8: //注销 logout(); break; } } //存款 private void deposit(){ System.out.println("**********************"); System.out.println("请输入存款金额"); int money=input.nextInt(); account.deposit(money); System.out.println("存款成功"); showMainMenu();//返回账户主菜单 } //注销 private void logout(){ System.out.println("注销成功"); new Start().showSystemMenu(); } //取款 private void withdraw(){ System.out.println("********************"); System.out.println("请输入取款金额"); int money=input.nextInt(); if (account.withdraw(money)){ System.out.println("提示：取款成功"); }else{ System.out.println("提示：取款失败"); } showMainMenu();//返回主菜单 } //查询余额 private void queryBalance(){ System.out.println("********************"); System.out.println("您的余额"+account.getBalance()+"元"); showMainMenu(); } //转账 private void transfer(){ System.out.println("*************"); System.out.println("请输入要转入的目标账户号"); int id=input.nextInt(); System.out.println("请输入转账金额"); int money=input.nextInt(); Account destAccount =Bank.findById(id); if (destAccount==null){ System.out.println("提示：目标账户不存在"); }else { if (account.getBalance()<money){ System.out.println("提示：您的账户余额不足，余额为："+account.getBalance()); }else { account.setBalance(account.getBalance()-money); destAccount.setBalance(destAccount.getBalance()+money); System.out.println("提示：转账成功，您的余额为"+account.getBalance()); } } showMainMenu(); } private void requestLoan(){ System.out.println("***************************"); //判断是否为可贷款账户 if (!(account instanceof Loanable)){ System.out.println("提示：此卡不可贷款"); }else { System.out.println("请输入贷款的金额"); int money=input.nextInt(); Loanable loan= ((Loanable) account); if (loan.requestLoan(money)){ System.out.println("提示：贷款成功，您当前的贷款总额为："+loan.getLoan()); }else{ System.out.println("提示：贷款失败"); } showMainMenu(); } } //还贷 private void payLoan(){ System.out.println("***********************8"); //判断是否为可贷款账户 if ((account instanceof Loanable)){ System.out.println("请输入还款的金额"); int money=input.nextInt(); Loanable loan=(Loanable)account; if (loan.payLoan(money)){ System.out.println("提示：还贷成功，您当前的余额为"+account.getBalance()+"贷款总额"+loan.getLoan()); }else { System.out.println("提示：还贷失败"); } }else { System.out.println("提示：此账户非贷款银行卡"); } showMainMenu(); } //修改密码 private void modifyPassword(){ System.out.println("********************"); System.out.println("请输入原密码"); String oldPassword=input.next(); System.out.println("请输入新密码"); String newPassword=input.next(); System.out.println("请再次输入新密码"); String rePassword=input.next(); //判断原密码是否正确 if (!oldPassword.equals(account.getPassword())){ System.out.println("提示：原密码错误"); }else { //判断两次输入的新密码是否一致 if (!rePassword.equals(newPassword)){ System.out.println("提示：两次输入的密码不一致"); }else { account.setPassword(newPassword); System.out.println("修改成功，请重新登录"); new Start().showSystemMenu();//返回系统主菜单 } } showMainMenu(); } }