简单ATM机功能实现

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;
import java.util.StringTokenizer;

public class Account {
 static int M=0,N=0;

  private String accountID;//存储账号
  private String accountname;//账户名称
  private String operatedate;//2018-09-20
  private int operatetype;//操作账户类型（1，存款2，取款3，转账汇款4，修改账户密码5，查询余额
  private String accountpassword;//用户密码
  private int accountbalance;//存储账户余额 0
  private int amount;//流水金额
  void setaccountID(String t)
  {
   accountID=t;
  }
  void setaccountname(String t)
  {
   accountname=t;
  }
  void setoperatedate(String t)
  {
   operatedate=t;
  }
  void setoperatetype(int t)
  {
   operatetype=t;
  }
  void setaccountpassword(String t)
  {
   accountpassword=t;
  }
  void setaccountbalance(int t)
  {
   accountbalance=t;
  }
  void amount(int t)
  {
   amount=t;
  }
  String getaccountID()
  {
   return accountID;
  }
  String getaccountname()
  {
   return accountname;
  }
  String getoperatedate()
  {
   return operatedate;
  }
  int getoperatetype()
  {
   return operatetype;
  }
  String getaccountpassword()
  {
   return accountpassword;
  }
  int getaccountbalance()
  {
   return accountbalance;
  }
  int getamount()
  {
   return amount;
  }
  Account(String AaccountID,String Aaccountname,String Aoperatedate,int Aoperatetype,String Aaccountpassword,int Aaccountbalance,int Aamount)
  {
   accountID=AaccountID;
   accountname=Aaccountname;
   operatedate=Aoperatedate;
   operatetype=Aoperatetype;
   accountpassword=Aaccountpassword;
   accountbalance=Aaccountbalance;
   amount=Aamount;
  }
 
    public static void main(String[]args)
    {
     Account[] a1=null;
     a1=new Account[6];
     a1[0]=new Account("20173599","zhoubo","2018-09-20",1,"753951",0,0);
     a1[1]=new Account("20173598","zhoubo","2018-09-20",1,"753951",0,0);
     a1[2]=new Account("20173597","zhoubo","2018-09-20",1,"753951",0,0);
     a1[3]=new Account("20173596","zhoubo","2018-09-20",1,"753951",0,0);
     a1[4]=new Account("20173595","zhoubo","2018-09-20",1,"753951",0,0);
     File file = null;
        FileWriter fw = null;
        file = new File("E:\\eclipse-workspace\\信 1705-1班 20173599 周博\\accountinformation.txt");
        try {
          if (!file.exists()) {
                 file.createNewFile();
             }
          fw=new FileWriter(file);
          for(int i=0;i<5;i++)
          {
           fw.write(a1[i].accountID+a1[i].accountname+a1[i].accountpassword+a1[i].accountbalance);
           fw.flush();
          }
          System.out.println("写数据成功！");
        }
        catch (IOException e) {
            e.printStackTrace();
    }
        finally {
         if(fw!=null)
         {
          try {
           fw.close();
          }catch (IOException e)
          {
           e.printStackTrace();
          }
         }
        }
        File file1 = null;
        FileWriter fw1 = null;
        file1 = new File("E:\\eclipse-workspace\\信 1705-1班 20173599 周博\\accountinformation.txt");
        try {
          if (!file1.exists()) {
                 file1.createNewFile();
             }
          fw1=new FileWriter(file1);
          for(int i=0;i<5;i++)
          {
           fw1.write(a1[i].accountID+a1[i].accountname+a1[i].accountpassword+a1[i].accountbalance);
           fw1.flush();
          }
          System.out.println("写数据成功！");
        }
        catch (IOException e) {
            e.printStackTrace();
    }
        finally {
         if(fw1!=null)
         {
          try {
           fw1.close();
          }catch (IOException e)
          {
           e.printStackTrace();
          }
         }
        }
        Shuru_zhanghao(a1);
        Shuru_mima(a1);
        M=2;
        if(M==-2)
        {
         System.out.println("您有三次机会 如果全错将被没收");
         for(int i=1;i<=3;i++)
         {
             Scanner scan=new Scanner(System.in);
             String l;
             l=scan.next();
             if(l!=a1[N].accountpassword)
             {
              System.out.println("您错了"+i+"次");
              if(i==3) {
               System.out.println("该账号三次录入密码错误，该卡已被系统没收，请与工行及时联系处理");
               break;}
             }
             else break;
         }
        }
          if(M==2)
          {    char ch=‘y‘;
         while(ch==‘y‘)
          {

              System.out.println("***************************************************************");
              System.out.println("\t欢迎"+a1[N].accountname+"使用中国工商银行自助柜员系统 ");
              System.out.println("***************************************************************");
              System.out.println("\t1、 存款");
              System.out.println("\t2、 取款:");
              System.out.println("\t3、 转账汇款:");
              System.out.println("\t4、 修改密码:");
              System.out.println("\t5、 查询余额:");
              System.out.println("\t6、 退出:");
             Scanner scan=new Scanner(System.in);/*输入  等待输入*/
             int sc5=scan.nextInt();//输入的值
             switch(sc5)
             {
             case 1:
                {
                 Cunkuan(a1); 
                    break;
                }
             case 2:
             {
              Cunkuan(a1);
              break;
             }
             case 5:
             {
              Cha_yu(a1);
             }
             case 6:
             {
              break;
             }
             }
          }
        
          } 
    }
    static void  Cha_yu(Account [] a)
    {
     System.out.println("\t当前余额为：");
     System.out.println(a[N].accountbalance);
    }
    static void  Qukuan(Account [] a)
    {
     System.out.println("******************************************************");
     System.out.println("\t欢迎zhoubo使用中国银行自助柜员系统");
     System.out.println("******************************************************");
     System.out.println("\t请输入取款金额：");
     Scanner in=new Scanner(System.in);
     int O;
      O=in.nextInt();
      a[N].amount=O;
     a[N].accountbalance=a[N].accountbalance-a[N].amount;
     System.out.println("\t当前账户存款操作成功");
     System.out.println("\t当前余额为：");
     System.out.println(a[N].accountbalance);
    }
    static void Cunkuan(Account [] a)
    {
     System.out.println("******************************************************");
     System.out.println("\t欢迎"+a[N].accountname+"o使用中国银行自助柜员系统");
     System.out.println("******************************************************");
     System.out.println("\t请输入存款金额：");
     Scanner in=new Scanner(System.in);
     int O;
      O=in.nextInt();
      a[N].amount=O;
      System.out.println("******************************************************");
      System.out.println("\t当前账户存款操作成功");
      System.out.println("\t当前余额为：");
      a[N].accountbalance+=a[N].amount;
      System.out.println(a[N].accountbalance);
    }
    static void Shuru_zhanghao(Account [] a)
    {
     System.out.println("******************************************************");
     System.out.println("\t欢迎"+a[N].accountname+"使用中国工商银行自动柜员系统");
     System.out.println("******************************************************");
     System.out.println("\t请输入您的账号：");
     Scanner in=new Scanner(System.in);
     String O;
      O=in.next();
      System.out.println("******************************************************");
      for(int i=0;i<5;i++)
      {
       if(O==a[i].accountID)
       {
        M=1;N=i;
       }
       else {System.out.println("输入正确！");M=-1;}
      }
    }
    static void Shuru_mima(Account [] a)
    {
     System.out.println("******************************************************");
     System.out.println("\t欢迎"+a[N].accountname+"使用中国银行自助柜员系统");
     System.out.println("******************************************************");
     System.out.println("\t请输入您的密码：");
     Scanner in=new Scanner(System.in);
     String O;
      O=in.next();
      System.out.println("******************************************************");
       if(O==a[N].accountpassword)
       {
        M=2;
       }
       else {System.out.println("输入正确！");M=-2;}
    }
}