Java中ATM机系统

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]-=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;
      }
         
        }
      }
     
}
}