ATM系统 第一个面向对象程序

  1 package com.hpu.bai;
  2 import java.util.Scanner;
  3 public class ATM {
  4     Bank bank = Bank.getBank();
  5     Scanner input = new Scanner(System.in);
  6     Account nowAcc ;
  7     private boolean answer(String s){
  8         if("Y".equals(s)){
  9             return true;
 10         }
 11         return false;    
 12     }
 13     public void start(){
 14         System.out.println("欢迎使用自助终端");
 15         System.out.println("-----------");
 16         System.out.println("1.开户");
 17         System.out.println("2.插卡");
 18         System.out.println("3.系统登录");
 19         System.out.println("4.退出系统");
 20         System.out.println("-----------");
 21         System.out.println("请输入你要操作的选项");
 22         String index = input.next();
 23         if("1".equals(index)){
 24             //创建新账户
 25             creatNew();
 26         }else if("2".equals(index)){
 27             //登录账户
 28             login();
 29         }else if("3".equals(index)){
 30             //系统管理
 31             adminLogin();
 32         }else if("4".equals(index)){
 33             //退出系统
 34             System.out.println("谢谢你的使用");
 35             System.exit(0);;
 36         }else {
 37             //System.out.println("你的输入有误，请重新输入");
 38         }
 39         start();
 40     }
 41     private void adminLogin() {
 42         System.out.println("请输入管理员密码");
 43         String pwd = input.next();
 44         if(pwd.equals("admin")){
 45             adminMenu();
 46         }else{
 47             System.out.println("密码错误");
 48         }
 49     }
 50     private void adminMenu() {
 51     System.out.println("管理员在线");
 52     System.out.println("-------------");
 53     System.out.println("1.显示所有账户");
 54     System.out.println("2.冻结账户");
 55     System.out.println("3.恢复账户");
 56     System.out.println("4.安全退出");
 57     System.out.println("-------------");
 58     String index = input.next();
 59     if("1".equals(index)){
 60         //显示所用账户
 61         allAcc();    
 62     }else if("2".equals(index)){
 63         //冻结账户
 64         disableAcc();
 65     }else if("3".equals(index)){
 66         //恢复账户
 67         enableAcc();
 68     }else if("4".equals(index)){
 69         //安全退出
 70         System.out.println("你已经安全退出");
 71         start();
 72     }
 73         adminMenu();
 74     }
 75     private void enableAcc() {
 76         System.out.println("当前不可用账户");
 77         Account[] accs = bank.getAccounts();
 78         for (Account account : accs) {
 79             if(account != null && !account.isStatus()){
 80                 System.out.println("账户名称\t是否可用");
 81                 System.out.println(account.getName()+"\t"+(account.isStatus()?"是":"否"));
 82             }
 83         }
 84         System.out.println("请输入你要恢复的账户名称");
 85         String name = input.next();
 86         Account disAcc = bank.getAccountByName(name);
 87         if(disAcc != null && !disAcc.isStatus()){
 88             System.out.println("确定要恢复该账户（Y/N）");
 89             if(answer(input.next())){
 90                 disAcc.setStatus(true);
 91                 System.out.println("恢复成功");
 92             }else{
 93                 System.out.println("该账户未被恢复");
 94                 allAcc();
 95             }
 96         }else{
 97             System.out.println("输入有误");
 98         }
 99     }
100     
101     private void disableAcc() {
102         System.out.println("当前可用账户");
103         Account[] accs = bank.getAccounts();
104         for (Account account : accs) {
105             if(account != null && account.isStatus()){
106                 System.out.println("账户名称\t是否可用");
107                 System.out.println(account.getName()+"\t"+(account.isStatus()?"是":"否"));
108             }
109         }
110         System.out.println("请输入你要冻结的账户名称");
111         String name = input.next();
112         Account disAcc = bank.getAccountByName(name);
113         if(disAcc != null && disAcc.isStatus()){
114             System.out.println("确定要冻结该账户（Y/N）");
115             if(answer(input.next())){
116                 disAcc.setStatus(false);
117                 System.out.println("冻结成功");
118             }else{
119                 System.out.println("该账户未被冻结");
120                 allAcc();
121             }
122         }else{
123             System.out.println("输入有误");
124         }
125     }
126     
127     private void allAcc() {
128         Account[] accs = bank.getAccounts();
129         for (Account account : accs) {
130             if(account != null){
131                 System.out.println("账户名称\t是否可用");
132                 System.out.println(account.getName()+"\t"+(account.isStatus()?"是":"否"));
133             }
134         }
135         
136     }
137     private void login() {
138         System.out.println("请输入你的账户名字");
139         String name = input.next();
140         nowAcc = bank.getAccountByName(name);
141         if(nowAcc == null){
142             System.out.println("你输入的账户不存在，请重新输入");
143             login();
144         }else{
145             System.out.println("请输入账户密码");
146             String pwd = input.next();
147             if(nowAcc.getPassword().equals(pwd)){
148                 System.out.println("登录成功");
149                 userMenu();
150             }else{
151                 System.out.println("你输入的密码错误，请重新输入");
152             }
153         }
154         
155     }
156     private void userMenu() {
157         System.out.println("欢迎"+nowAcc.getName()+"的到来");
158         System.out.println("-----------");
159         System.out.println("1.查询余额");
160         System.out.println("2.存款");
161         System.out.println("3.取款");
162         System.out.println("4.转账");
163         System.out.println("5.修改密码");
164         System.out.println("6.退出登录");
165         System.out.println("-----------");
166         System.out.println("请输入你要操作的选项");
167         String index = input.next();
168         if("1".equals(index)){
169             //查询余额
170             queryMoney();
171             
172         }else if("2".equals(index)){
173             //存款
174             saveMoney();
175         }else if("3".equals(index)){
176             //取款
177             drawMoney();
178         }else if("4".equals(index)){
179             //转账
180             transMoney();    
181         }else if("5".equals(index)){
182             //修改密码
183             rePwd();
184         }else if("6".equals(index)){
185             start();
186         }else{
187             System.out.println("你的输入有误，请重新输入");
188         }
189         userMenu();
190     }
191     
192     private void rePwd() {
193         System.out.println("请输入原始密码");
194         String pwd = input.next();
195         if(nowAcc.getPassword().equals(pwd)){
196             System.out.println("请输入新密码");
197             String pwd1 = input.next();
198             System.out.println("请再次输入新密码");
199             String pwd2 = input.next();
200             if(pwd1.equals(pwd2)){
201                 nowAcc.setPassword(pwd1);
202                 System.out.println("修改密码成功");
203             }else{
204                 System.out.println("两次密码输入不一样");
205                 rePwd();
206             }
207         }
208         
209     }
210     private void transMoney() {
211         System.out.println("请输入你要转入的账户名字");
212         String name = input.next();
213         if(nowAcc.getName().equals(name)){
214             System.out.println("不能够给自己转账，请重新输入");
215         }else{    
216             Account transAcc = bank.getAccountByName(name);
217             if(transAcc == null){
218                 System.out.println("你输入的账户不存在");
219             }else{
220                 System.out.println("请输入你要转入的金额");
221                 Float money = input.nextFloat();
222                 if(money > 0){
223                     if(money < nowAcc.getMoney()){
224                         System.out.println("请确保资金安全，你确实要转账（Y/N）");
225                         if(answer(input.next())){
226                             nowAcc.setMoney(nowAcc.getMoney()-money);
227                             transAcc.setMoney(transAcc.getMoney()+money);
228                             System.out.println("转账成功");
229                             queryMoney();
230                         }
231                     }else{
232                         System.out.println("余额不足，请重新输入");
233                     }
234                 }else{
235                     System.out.println("你输入的金额有误");
236                 }
237                 
238             }
239         }
240     }
241     private void drawMoney() {
242         //queryMoney();
243         System.out.println("请输入你要取的金额");
244         Float money = input.nextFloat();
245         if(money > 0){
246             if(money > nowAcc.getMoney()){
247                 System.out.println("当前余额不足");
248                 drawMoney();
249             }else{            
250                 nowAcc.setMoney(nowAcc.getMoney()-money);
251                 System.out.println("取款成功");
252                 queryMoney();
253             }
254         }else{
255             System.out.println("你输入的金额有误，请重新输入");        
256         }
257     }
258     
259     private void saveMoney() {
260         System.out.println("请输入你要存入的金额");
261         Float money = input.nextFloat();
262         if(money>0){
263             nowAcc.setMoney(nowAcc.getMoney()+money);
264             System.out.println("存款成功");
265             queryMoney();
266         }else{
267             System.out.println("你输入的金额有误，请重新输入");        
268         }
269     }
270     private void queryMoney() {
271         System.out.println("你当前的余额为￥: "+nowAcc.getMoney());
272         userMenu();
273     }
274     private void creatNew() {
275         //验证账户是否可用
276         System.out.println("请输入你所开账户的名字");
277         String name = input.next();
278         Account acc = bank.getAccountByName(name);    
279         if(acc == null){
280             //账户可用后提示可以输入密码
281             System.out.println("检测你输入的账户可用");
282             System.out.println("请输入你要设置的密码");
283             String pwd1 = input.next();
284             System.out.println("请再次输入你要设置的密码");
285             String pwd2 = input.next();
286             if(pwd1.equals(pwd2)){
287                 Account newAcc = new Account();
288                 newAcc.setName(name);
289                 newAcc.setPassword(pwd2);
290                 System.out.println("你是否要存入现金(Y/N)");
291                 if(answer(input.next())){
292                     System.out.println("请输入你要存入的金额");
293                     Float money = input.nextFloat();
294                     newAcc.setMoney(money);        
295                 }else{
296                     newAcc.setMoney(0F);
297                 }
298                 newAcc.setStatus(true);
299                 //要将新开好的账户传输到银行账户当中去
300                 if(bank.accSave(newAcc)){                        
301                     System.out.println("开户成功，请登录");
302                 }else{
303                     System.out.println("服务器忙，请稍后");
304                 }    
305             }else{
306                 System.out.println("你两次输入的密码不同，请重新输入");
307                 creatNew();
308             }
309         }else{
310             System.out.println("你所开户的名字已重复，请重新输入开户名字");
311             creatNew();
312         }    
313     }
314 }

 1 package com.hpu.bai;
 2 
 3 public class Bank {
 4     private Bank(){}
 5     private static Bank bank = null;
 6     public static Bank getBank() {
 7         if(bank == null){
 8             bank = new Bank();
 9         }
10         return bank;
11     }
12     
13     public void setAccounts(Account[] accounts) {
14         this.accounts = accounts;
15     }
16     private Account[] accounts = new Account[100];
17 
18     public Account[] getAccounts() {
19         return accounts;
20     }
21     public Account getAccountByName(String name){
22         for (int i = 0; i < accounts.length; i++) {
23             if(accounts[i] != null && accounts[i].getName().equals(name)){
24                 return accounts[i];
25             }
26         }
27         return null;
28     }
29     public boolean accSave(Account a){
30         for (int i = 0; i < accounts.length; i++) {
31             if(accounts[i]== null){
32                 accounts[i] = a;
33                 return true;
34             }
35         }
36         return false;
37     }
38 }

 1 package com.hpu.bai;
 2 
 3 public class Account {
 4     private String name;
 5     private String password;
 6     private Float money ;
 7     private boolean status;
 8     public String getName() {
 9         return name;
10     }
11     public void setName(String name) {
12         this.name = name;
13     }
14     public String getPassword() {
15         return password;
16     }
17     public void setPassword(String password) {
18         this.password = password;
19     }
20     public Float getMoney() {
21         return money;
22     }
23     public void setMoney(Float money) {
24         this.money = money;
25     }
26     public boolean isStatus() {
27         return status;
28     }
29     public void setStatus(boolean status) {
30         this.status = status;
31     }
32     
33 }

1 package com.hpu.bai;
2 
3 public class Test {
4     public static void main(String[] args) {
5         ATM atm = new ATM();
6         atm.start();
7     }
8 }