//ATM机
public class ATMMachine { //所有用户信息 private UserInfo[] allUsers; //当前操作用户信息 private UserInfo user; // 现金 private int cash; // 现金容量上限 public static final int MAX_CASH = 200000; // 存取上限 public static final int GET_SET_MAX = 2000;public ATMMachine() {
// 预载入用户信息---文件读操作 this.allUsers = FileOperation.readFile();// this.allUsers = new UserInfo[5];// for (int i = 0; i < allUsers.length; i++) { // this.allUsers[i] = new UserInfo("zhang" + i, "123456" + i,// 10000 + i * 1000);// } this.cash = 100000; }// 运行
public void run() { this.welcome(); boolean flag = this.login(); if (flag) { System.out.println("用户" + this.user.getUsername() + "于" + this.getDate()+ "登录成功，欢迎您！"); while (true) { int choice = this.choiceMenu(); switch (choice) { case 1: this.query(); break; case 2: this.storeMoney(); break; case 3: this.getMoney(); break; case 4: this.changePwd(); break; case 5: this.exit(); break; default: System.out.println("对不起，没有该选项！"); break; } } } else { System.out.println("您的账户被冻结！请到柜台处理！"); } }// 显示欢迎
private void welcome() { System.out.println("******************************"); System.out.println("*********欢**迎**登**录*********"); System.out.println("******************************"); System.out.println("*********爱存不存银行ATM*********"); System.out.println("******************************"); System.out.println("*****************version1.0***"); }// 登录
private boolean login() { Scanner scan = new Scanner(System.in); for (int i = 0; i < 3; i++) { System.out.println("请输入用户名："); String inputName = scan.next(); System.out.println("请输入密码："); String inputPwd = scan.next(); for (UserInfo tmp : allUsers) { if (tmp.getUsername().equals(inputName) && tmp.getPassword().equals(inputPwd)) { this.user = tmp; return true; } } System.out.println("输入有误！您还有" + (2 - i) + "次机会"); } return false; }// 选择菜单
private int choiceMenu() { int choice = 0; Scanner scan = new Scanner(System.in); System.out.println("请选择您要执行的操作："); System.out.println("1、查询；2、存款；3、取款；4、修改密码；5、退出"); String choiceStr = scan.next(); if(choiceStr.matches("[1-5]")){ choice = Integer.parseInt(choiceStr); } return choice; }// 查询余额
private void query() { //直接显示user对象中的account属性值 System.out.println("您当前的余额是：" + user.getAccount() + "元！"); }// 存钱
private void storeMoney() { //1、接收用户输入 //2、判断--不能为0，不能为负，不能不是100的倍数，不能超过存取上限，不能超过现金容量--给出提示 //3、判断通过--加现金，加余额 System.out.println("请输入您要存储的金额："); String inputMoney = new Scanner(System.in).next(); if(inputMoney.matches("(20|1[0-9]|[1-9])00")){ int money = Integer.parseInt(inputMoney); if(money + this.cash > this.MAX_CASH){ System.out.println("对不起，本机容量不足！"); }else{ this.cash += money; this.user.setAccount(this.user.getAccount() + money); //文件写操作 FileOperation.writeFile(this.allUsers); System.out.println("您于" + this.getDate() + "成功存款" + money + "元！"); } }else{ System.out.println("请输入有效金额！本机只提供2000以内的百元服务！"); } }// 取款
private void getMoney() { System.out.println("请输入您要取出的金额："); String inputMoney = new Scanner(System.in).next(); if(inputMoney.matches("(20|1[0-9]|[1-9])00")){ int money = Integer.parseInt(inputMoney); if(money >= this.cash){ System.out.println("对不起，本机现金不足！"); }else if(money > this.user.getAccount() ){ System.out.println("对不起，您的账户上余额不足！"); }else{ this.user.setAccount(this.user.getAccount() - money); this.cash -= money; //文件写操作 FileOperation.writeFile(this.allUsers); System.out.println("您于" + this.getDate() + "成功取款" + money + "元！"); } }else{ System.out.println("请输入有效金额！本机只提供2000以内的百元服务！"); } }// 修改密码
private void changePwd() { Scanner scan = new Scanner(System.in); System.out.println("请输入老密码："); String oldPwd = scan.next(); System.out.println("请输入新密码："); String newPwd = scan.next(); System.out.println("再次输入新密码："); String rePwd = scan.next(); if(!oldPwd.equals(this.user.getPassword())){ System.out.println("老密码输入错误！"); }else if(!newPwd.equals(rePwd)){ System.out.println("两次密码不一致！"); }else{ this.user.setPassword(newPwd); //文件写操作 FileOperation.writeFile(this.allUsers); System.out.println("您于" + this.getDate() + "成功修改密码！"); } }// 退出
private void exit() { System.out.println("谢谢您的使用！请收好您的卡！"); System.exit(0); } //格式化日期 private String getDate(){ String date = ""; Date now = new Date(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日 E HH:mm:ss"); date = sdf.format(now); return date; }}
//用户信息public class UserInfo { //账号 private String username; //密码 private String password; //余额 private float account; public UserInfo(){ } public UserInfo(String username, String password, float account) { this.username = username; this.password = password; this.account = account; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public float getAccount() { return account; } public void setAccount(float account) { this.account = account; }}
import java.io.FileInputStream;
import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.Properties;import java.util.Set;public class FileOperation {
//读文件 public static UserInfo[] readFile(){ //把文件中的数据先读到Properties容器中 Properties S=new Properties(); try { S.load(new FileInputStream("User.properties")); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } //把Properties中的字符串数据转换为UserInfo对象，放到UserInfo[]中 UserInfo[] B=new UserInfo[S.size()]; for(int i=0;i<S.size();i++){ String A=S.getProperty(Integer.toString(i)); String[] values = A.split("&"); UserInfo user=new UserInfo(values[0],values[1],Float.parseFloat(values[2]) ); B[i]=user; } return B; } //写文件 public static void writeFile(UserInfo[] allUsers){ //把UserInfo[]中的数据，放入到Properties中 Properties S=new Properties(); UserInfo[] A = allUsers; for(int i=0;i<A.length;i++){ S.setProperty(Integer.toString(i), A[i].getUsername()+"&"+A[i].getPassword()+"&"+A[i].getAccount()); } //把Properties中的数据写入文件中 try { S.store(new FileOutputStream("User.properties"), null); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
public class TestMain {
public static void main(String[] args) {
// TODO Auto-generated method stub ATMMachine machine = new ATMMachine(); machine.run();// System.out.println((int)(Math.random() * 10)); }}