该程序主要是模仿ATM机的过程主要是为了练习面向对象
主要有三个类 ATM和 Bank和 Account 类
先粘贴代码如下
ATM
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 }
Bank类
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 }
Account类
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 }
最后还有个test类
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 }
时间： 2025-01-02 16:53:22