Java中ATM机系统

拼搏现实的明天。 2022-07-16 11:17 221阅读 0赞

package com.myhomework;  
//陈天祥  
//时间：2016.10.13  
//功能:ATM机  
import java.util.Scanner;  
  
  
public class Atmprogram \{  
  
  
public static void main(String\[\] args) \{  
String\[\]\[\] id = \{ \{ "001", "002", "003" \} \};  
String\[\]\[\] password = \{ \{ "123", "456", "789" \} \};  
double\[\]\[\] money = \{ \{ 100, 1000, 10000 \} \};  
manage(id,password,money);  
  
  
\}  
  
  
// 登录账户  
public static void login(String\[\]\[\] id, String\[\]\[\] password,double\[\]\[\] money) \{  
Scanner s1 = new Scanner(System.in);  
System.out.println("请输入您的卡号");  
String idnumber = s1.nextLine();  
int index = -1;  
//  
for (int i = 0; i < id\[0\].length; i++) \{  
if (idnumber.equals(id\[0\]\[i\])) \{  
index = i;  
System.out.println("卡号正确");  
\}  
\}  
if(index==-1)\{  
System.out.println("卡号错误\\n1:重新输入\\n2：退出登录系统");  
int input=s1.nextInt();  
switch(input)\{  
case 1:  
login(id,password,money);  
break;  
case 2:  
System.out.println("已退出登录系统");  
break;  
default:  
System.out.println("输入错误，请重新输入");  
login(id,password,money);  
break;  
  
\}  
  
\}  
System.out.println("请输入您的密码");  
String psw = s1.nextLine();  
if (psw.equals(password\[0\]\[index\])) \{  
 System.out.println("密码正确");  
 administrator(id,password,money,index);  
\} else \{  
System.out.println("密码错误!\\n1:重新输入\\n2：退出登录系统");  
int input=s1.nextInt();  
switch(input)\{  
case 1:  
login(id,password,money);  
break;  
case 2:  
System.out.println("已退出登录系统");  
break;  
default:  
System.out.println("输入错误，请重新输入");  
 login(id,password,money);  
break;  
  
\}  
\}  
\}  
  
  
// 开通账户  
public static void regist(String\[\]\[\] id, String\[\]\[\] password,double\[\]\[\] money) \{  
Scanner s1 = new Scanner(System.in);  
System.out.println("请输入新的ID");  
String idname = s1.nextLine();  
for (int i = 0; i < id\[0\].length; i++) \{  
while (id\[0\]\[i\].equals(idname)) \{  
System.out.println("该用户已存在，请输入重新输入一个ID");  
idname = s1.nextLine();  
i=0;  
\}  
\}  
System.out.println("该ID可以使用，请输入密码");  
String newpwd = s1.nextLine();  
String\[\] newid = id\[0\];  
String\[\] newpassword = password\[0\];  
double\[\] newmoney = money\[0\];  
  
  
id\[0\] = new String\[newid.length + 1\];  
password\[0\] = new String\[newid.length + 1\];  
money\[0\] = new double\[newmoney.length + 1\];  
for (int j = 0; j < id\[0\].length; j++) \{  
if (j == id\[0\].length - 1) \{  
id\[0\]\[j\] = idname;  
password\[0\]\[j\] = newpwd;  
money\[0\]\[j\] = 0;  
\}else\{  
id\[0\]\[j\] = newid\[j\];  
password\[0\]\[j\] = newpassword\[j\];  
money\[0\]\[j\] = newmoney\[j\];  
\}  
  
  
\}  
System.out.println("开户成功！\\n1：登录\\n2：退出开户系统");  
int input = s1.nextInt();  
switch (input) \{  
case 1:  
login(id, password,money);  
  
  
break;  
case 2:  
System.out.println("退出注册");  
break;  
default:  
System.out.println("输入错误，退出开户系统！");  
\}  
  
  
\}  
// 用户管理系统  
public static void manage(String\[\]\[\] id,String\[\]\[\] password,double\[\]\[\]money)\{  
 System.out.println("欢迎进入ATM机！\\n1:登录\\n2：开通用户\\n3：退出系统");  
 Scanner s1=new Scanner(System.in);  
 int input=s1.nextInt();  
 switch(input)\{  
 case 1:  
  login(id,password,money);  
  break;  
 case 2:  
  regist(id,password,money);  
  break;  
 case 3:  
  System.out.println("已退出系统");  
  break;  
  default:  
  System.out.println("输入错误，请重新输入");  
  break;  
 \}  
 manage(id,password,money);  
\}  
// 用户操作系统  
public static void administrator(String\[\]\[\] id,String \[\]\[\]password,double\[\]\[\] money,int index) \{  
Scanner s1 = new Scanner(System.in);  
System.out  
.println("登录成功！请输入您需要进行的操作：\\n1：存款\\n2：取款\\n3：转账\\n4：查询余额\\n5：修改密码\\n6：退出当前用户");  
int input = s1.nextInt();  
switch (input) \{  
case 1:  
depositmoney(id,password,money,index);  
break;  
case 2:  
drawmoney(id,password,money,index);  
break;  
case 3:  
transfer(id,password,money,index);  
break;  
case 4:  
lookupmoney(id,password,money,index);  
  
break;  
case 5:  
changepassword(id,password,index);  
break;  
case 6:  
System.out.println("已经退出当前用户");  
manage(id,password,money);  
break;  
 default:  
 System.out.println("输入错误，请重新输入");  
\}  
administrator(id,password,money,index);  
  
  
\}  
  
  
// 存款  
public static void depositmoney(String\[\]\[\] id, String\[\]\[\] password,double\[\]\[\] money,int index) \{  
Scanner s1 = new Scanner(System.in);  
System.out.println("请输入你想存入的数目：");  
double dmoney = s1.nextDouble();  
if(dmoney>=0)\{  
money\[0\]\[index\] += dmoney;  
System.out.println("存款成功，您目前的余额为：" + money\[0\]\[index\]);  
\}  
  
\}  
  
  
  
// 取款  
public static void drawmoney(String\[\]\[\] id, String\[\]\[\] password,double\[\]\[\] money,int index) \{  
 Scanner s1=new Scanner(System.in);  
System.out.println("请输入你想取出的数目：");  
double dmoney = s1.nextDouble();  
if (dmoney > money\[0\]\[index\]) \{  
System.out.println("你卡里余额不足，取款失败！\\n1：继续取款\\n2:结束取款 ");  
int select = s1.nextInt();  
switch (select) \{  
case 1:  
drawmoney(id, password, money,index);  
break;  
case 2:  
System.out.println("退出取款系统");  
default:  
System.out.println("输入错误，退出取款系统");  
break;  
\}  
\} else \{  
money\[0\]\[index\] -= dmoney;  
System.out.println("取款成功，您目前的余额为：" + money\[0\]\[index\]);  
\}  
  
  
\}  
  
  
// 查询余额  
public static void lookupmoney(String\[\]\[\] id, String\[\]\[\] password,double\[\]\[\] money,int index) \{  
System.out.println("您的余额为："+money\[0\]\[index\]);  
\}  
  
  
//计算下标  
public static int countindex(String\[\]\[\] id, String idnumber) \{  
int index = -1;  
for (int i = 0; i < id\[0\].length; i++) \{  
if (idnumber.equals(id\[0\]\[i\])) \{  
index = i;  
\}  
\}  
return index;  
\}  
  
  
// 修改ID的密码  
public static void changepassword(String\[\]\[\] id, String\[\]\[\] password,int index) \{  
Scanner s1 = new Scanner(System.in);  
System.out.println("请输入您的原密码");  
String idname = s1.nextLine();  
if(idname.equals(password\[0\]\[index\]))\{  
System.out.println("密码正确！\\n请输入新的密码");  
 String newpwd=s1.nextLine();  
 System.out.println("请再次输入新密码：");  
 String newpwd1=s1.nextLine();  
 if(newpwd.equals(newpwd1))\{   
password\[0\]\[index\] = newpwd;  
System.out.println("修改成功，您的新密码为：" + password\[0\]\[index\]);  
  
  
\}  
\}  
  
  
\}  
//转账  
public static void transfer(String\[\]\[\] id,String\[\]\[\] password,double\[\]\[\] money,int index)\{  
 System.out.println("请输入你需要转入的账户");  
 Scanner s1=new Scanner(System.in);  
 String transferuser=s1.nextLine();  
 int indexuser=countindex(id,transferuser);  
 if(indexuser==-1)\{  
  System.out.println("账户不存在!\\n1:重新输入\\n2：退出转账");  
  int input=s1.nextInt();  
  switch(input)\{  
  case 1:  
  transfer(id,password,money,index);  
  break;  
  case 2:  
  System.out.println("已退出转账系统");  
  administrator(id,password,money,index);  
  break;  
  default:  
  System.out.println("输入错误，退出转账");  
  administrator(id,password,money,index);  
  break;  
  \}  
 \}else\{  
  System.out.println("请输入您需要转账的金额：");  
  double transfermoney=s1.nextDouble();  
  if(transfermoney>=0&&transfermoney<money\[0\]\[index\])\{  
   money\[0\]\[index\]-=transfermoney;  
   money\[0\]\[indexuser\]+=transfermoney;  
   System.out.println("转账完成，您目前的余额为："+money\[0\]\[index\]);  
  \}else\{  
  System.out.println("转账金额无效!\\n1:重新转账\\n退出转账");  
  int input=s1.nextInt();  
   switch(input)\{  
  case 1:  
  transfer(id,password,money,index);  
  break;  
  case 2:  
  System.out.println("已退出转账系统");  
  administrator(id,password,money,index);  
  break;  
  default:  
  System.out.println("输入错误，退出转账");  
  administrator(id,password,money,index);  
  break;  
  \}  
    
  \}  
 \}  
  
\}  
\}