第一次JAVA课，第一次课堂考，课后感受【代码部分】

Account.java

  1 package account;

public class Account
{
    private String accountID;
    private String accountname;
    private String accountpassword;
    private int accountbalance;
    private int operatetype;
    private String operatedate;
    private int amount;

    /**
     * @param accountID       用户账号
     * @param accountname     账户的名称
     * @param accountpassword 用户密码
     * @param accountbalance  账户余额
     * @param operatetype     操作账户的类型
     * @param operatedate     操作的时间
     * @param amount          流水金额
     */
    public Account()
    {
        this.setAccountID("");
        this.setAccountname("");
        this.setAccountpassword("");
        this.setAccountbalance(0);
    }
    public Account(String accountID, String accountname, String accountpassword, int accountbalance)
    {
        this.setAccountID(accountID);
        this.setAccountname(accountname);
        this.setAccountpassword(accountpassword);
        this.setAccountbalance(accountbalance);
//        Date now = new Date();
//        SimpleDateFormat ft = new SimpleDateFormat("yyyy-MM-dd");
//        operatedate = ft.format(now);
    }

    public String getAccountID()
    {
        return accountID;
    }

    public void setAccountID(String accountID)
    {
        this.accountID = accountID;
    }

    public String getAccountname()
    {
        return accountname;
    }

    public void setAccountname(String accountname)
    {
        this.accountname = accountname;
    }

    public String getAccountpassword()
    {
        return accountpassword;
    }

    public void setAccountpassword(String accountpassword)
    {
        this.accountpassword = accountpassword;
    }

    public int getAccountbalance()
    {
        return accountbalance;
    }

    public void setAccountbalance(int accountbalance)
    {
        this.accountbalance = accountbalance;
    }

    public int getOperatetype()
    {
        return operatetype;
    }

    public void setOperatetype(int operatetype)
    {
        this.operatetype = operatetype;
    }

    public String getOperatedate()
    {
        return operatedate;
    }

    public void setOperatedate(String operatedate)
    {
        this.operatedate = operatedate;
    }

    public int getAmount()
    {
        return amount;
    }

    public void setAmount(int amount)
    {
        this.amount = amount;
    }
}

 AccountManager.java

 1 package account;

import java.util.*;
import java.io.*;
import java.nio.file.Paths;
import java.text.SimpleDateFormat;

public class AccountManager
{
    private Account[] AccountList;
    private Account Account_now;

    public AccountManager()
    {
        AccountList = new Account[5];
        AccountList[0] = new Account("20173475", "韩一祺", "123456", 99999999);
        AccountList[1] = new Account("20173476", "韩二祺", "123456", 99999998);
        AccountList[2] = new Account("20173477", "韩三祺", "123456", 99999997);
        AccountList[3] = new Account("20173478", "韩四祺", "123456", 99999996);
        AccountList[4] = new Account("20173479", "韩五祺", "123456", 99999995);
    }

    public void GUI()
    {
        filewrite();
        fileload();
        int n = 0;
        Scanner in = new Scanner(System.in);
        System.out.print("***************************************************************\r\n" + "欢迎使用中国工商银行自动柜员系统\r\n"
                + "****************************************************************\r\n"
                + "                          请输入您的账号：\r\n"
                + "****************************************************************\r\n");
        String accountID = in.nextLine();
        Account_now = new Account();
        while (true)
        {
            select_account(accountID);
            if (Account_now.getAccountID().equals(""))
            {
                System.out.println("未找到该账户");
                GUI();
            } else
            {
                GUI3();
            }
            String accountpassword = in.nextLine();
            if (accountpassword.equals(Account_now.getAccountpassword()))
            {
                GUI2();
            } else
            {
                n++;
                if (n < 3)
                {
                    System.out.println("密码录入错误");
                } else
                {
                    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");
                    GUI();
                }
            }
        }
    }

    public void GUI2()
    {
        System.out.printf(
                "***************************************************************\r\n" + "欢迎%s使用中国工商银行自助柜员系统\r\n"
                        + "****************************************************************\r\n" + "1、    存款；\r\n"
                        + "2、    取款；\r\n" + "3、    转账汇款；\r\n" + "4、    修改密码；\r\n" + "5、    查询余额；\r\n"
                        + "****************************************************************\r\n",
                Account_now.getAccountname());
        Scanner in = new Scanner(System.in);
        String key = in.nextLine();
        switch (key)
        {
        case "1":
            deposit();
            GUI2();
            break;
        case "2":
            withdraw();
            GUI2();
            break;
        case "3":
            transfer();
            GUI2();
            break;
        case "4":
            chang_password();
            GUI2();
            break;
        case "5":
            inquiry_balance();
            GUI2();
            break;
        default:
            GUI();
            break;
        }
    }

    public void GUI3()
    {
        System.out.print("***************************************************************\r\n");
        System.out.printf("欢迎%s使用中国工商银行自助柜员系统\r\n", Account_now.getAccountname());
        System.out.print("****************************************************************\r\n");
        System.out.print("                          请输入您的密码：\r\n");
        System.out.print("****************************************************************\r\n");
    }

    private void select_account(String accountID)
    {
        for (Account a : AccountList)
        {
            if (a.getAccountID().equals(accountID))
            {
                Account_now = a;
                Date now = new Date();
                SimpleDateFormat ft = new SimpleDateFormat("yyyy-MM-dd");
                Account_now.setOperatedate(ft.format(now));
            }
        }
    }

    public void fileload()
    {
        int i=0;
        Scanner in=null;
        try
        {
            in=new Scanner(Paths.get("accountinfomation.txt"));
        } catch (IOException e)
        {
            e.printStackTrace();
        }
        while(i<5)
        {
            AccountList[i].setAccountID(in.nextLine());
            AccountList[i].setAccountname(in.nextLine());
            AccountList[i].setAccountpassword(in.nextLine());
            AccountList[i].setAmount(Integer.valueOf(in.nextLine()));
            in.nextLine();
            i++;
        }
    }

    public void filewrite()
    {
        PrintWriter out=null;
        try
        {
            OutputStream f = new FileOutputStream("accountinfomation.txt",false);
            out=new PrintWriter(f);
        } catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        for(Account e:AccountList)
        {
            select_account(e.getAccountID());
            out.println(Account_now.getAccountID());
            out.println(Account_now.getAccountname());
            out.println(Account_now.getAccountpassword());
            out.println(Account_now.getAmount());
            out.println();
        }
        out.close();
    }

    public void withdraw()
    {
        int number = 0;
        boolean flag = false;
        System.out.printf(
                "***************************************************************\r\n" + "欢迎%s使用中国工商银行自助柜员系统\r\n"
                        + "****************************************************************当前账户每日可以支取2万元。\r\n"
                        + "1、100元\r\n" + "2、500元\r\n" + "3、1000元\r\n" + "4、1500元\r\n" + "5、2000元\r\n" + "6、5000元；\r\n"
                        + "7、其他金额\r\n" + "8、退卡\r\n" + "9、返回\r\n"
                        + "****************************************************************\r\n",
                Account_now.getAccountname());
        Scanner in = new Scanner(System.in);
        int key = in.nextInt();
        switch (key)
        {
        case 1:
            number = 100;
            if (Account_now.getAccountbalance() < 100)
                System.out.println("账户余额不足");
            else
            {
                Account_now.setAccountbalance(Account_now.getAccountbalance() - 100);
                flag = true;
            }
            break;
        case 2:
            number = 500;
            if (Account_now.getAccountbalance() < 500)
                System.out.println("账户余额不足");
            else
            {
                Account_now.setAccountbalance(Account_now.getAccountbalance() - 500);
                flag = true;
            }
            break;
        case 3:
            number = 1000;
            if (Account_now.getAccountbalance() < 1000)
                System.out.println("账户余额不足");
            else
            {
                Account_now.setAccountbalance(Account_now.getAccountbalance() - 1000);
                flag = true;
            }
            break;
        case 4:
            number = 1500;
            if (Account_now.getAccountbalance() < 1500)
                System.out.println("账户余额不足");
            else
            {
                Account_now.setAccountbalance(Account_now.getAccountbalance() - 1500);
                flag = true;
            }
            break;
        case 5:
            number = 2000;
            if (Account_now.getAccountbalance() < 2000)
                System.out.println("账户余额不足");
            else
            {
                Account_now.setAccountbalance(Account_now.getAccountbalance() - 2000);
                flag = true;
            }
            break;
        case 6:
            number = 5000;
            if (Account_now.getAccountbalance() < 5000)
                System.out.println("账户余额不足");
            else
            {
                Account_now.setAccountbalance(Account_now.getAccountbalance() - 5000);
                flag = true;
            }
            break;
        case 7:
            System.out.print("请输入取款金额：");
            number = in.nextInt();
            if (Account_now.getAccountbalance() < number)
                System.out.println("账户余额不足");
            else
            {
                Account_now.setAccountbalance(Account_now.getAccountbalance() - number);
                flag = true;
            }
            break;
        case 8:
            GUI();
            number = 0;
            break;
        case 9:
            GUI2();
            number = 0;
            break;
        }
        if (flag)
        {
            System.out.printf("当前账户取款操作%d元成功。\r\n" + "当前账户余额为：%d元\r\n", number, Account_now.getAccountbalance());
        }
        PrintWriter out=null;
        try
        {
            OutputStream f = new FileOutputStream("accountlist.txt",true);
            out=new PrintWriter(f);
        } catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        out.printf("%s取款%d元\r\n",Account_now.getAccountID(),number);
        out.printf("%s\r\n",Account_now.getOperatedate());
        out.close();
    }

    public void deposit()
    {
        Scanner in = new Scanner(System.in);
        System.out.printf(
                "***************************************************************\r\n" + "欢迎%s使用中国工商银行自助柜员系统\r\n"
                        + "****************************************************************\r\n" + "请输入存款金额；\r\n"
                        + "       \r\n" + "****************************************************************\r\n",
                Account_now.getAccountname());
        String number = in.nextLine();
        if (Integer.valueOf(number).intValue() > 0)
        {
            Account_now.setAccountbalance(Account_now.getAccountbalance() + Integer.valueOf(number).intValue());
            System.out.printf(
                    "***************************************************************\r\n" + "欢迎%s使用中国工商银行自助柜员系统\r\n"
                            + "****************************************************************\r\n" + "当前账户存款操作成功。\r\n"
                            + "当前账户余额为：%d元\r\n"
                            + "****************************************************************\r\n",
                    Account_now.getAccountname(), Account_now.getAccountbalance());
            PrintWriter out=null;
            try
            {
                OutputStream f = new FileOutputStream("accountlist.txt",true);
                out=new PrintWriter(f);
            } catch (FileNotFoundException e)
            {
                e.printStackTrace();
            }
            out.printf("%s存款%s元\r\n",Account_now.getAccountID(),number);
            out.printf("%s\r\n",Account_now.getOperatedate());
            out.close();
        } else
        {
            GUI();
        }
    }

    public void transfer()
    {
        String number1 = Account_now.getAccountID();
        int balance = Account_now.getAccountbalance();
        System.out.print("请输入转账账户；");
        Scanner in = new Scanner(System.in);
        String number2 = in.nextLine();
        select_account(number2);
        if (Account_now.getAccountID().equals(""))
        {
            System.out.println("该账户不存在");
        } else
        {
            System.out.print("请输入转账金额；");
            int number3 = in.nextInt();
            if (number3 > balance)
            {
                System.out.println("账户余额不足");
            } else
            {
                System.out.printf("请确认是否向*%s转账%d元。",Account_now.getAccountname().substring(1, Account_now.getAccountname().length()),number3);
                in.nextLine();
                String key =in.nextLine();
                switch (key)
                {
                case "Y":
                    Account_now.setAccountbalance(Account_now.getAccountbalance() + number3);
                    balance -= number3;
                    System.out.printf("当前账户向*%s成功转账%d元。\r\n" + 
                            "当前账户余额为：%d元\r\n",Account_now.getAccountname().substring(1, Account_now.getAccountname().length()),number3,balance);
                    PrintWriter out=null;
                    try
                    {
                        OutputStream f = new FileOutputStream("accountlist.txt",true);
                        out=new PrintWriter(f);
                    } catch (FileNotFoundException e)
                    {
                        e.printStackTrace();
                    }
                    out.printf("%s转账给%s%d元\r\n",number1,Account_now.getAccountID(),number3);
                    out.printf("%s\r\n",Account_now.getOperatedate());
                    out.close();
                    break;
                case "N":
                    break;
                }
            }
        }
        select_account(number1);
        Account_now.setAccountbalance(balance);
    }

    public void chang_password()
    {
        Scanner in=new Scanner(System.in);
        System.out.print("请输入当前密码：");
        String password=in.nextLine();
        if(password.equals(Account_now.getAccountpassword()))
        {
            System.out.print("请输入修改密码：");
            String password2=in.nextLine();
            System.out.print("请输入确认密码：");
            String password3=in.nextLine();
            if(password2.equals(password3))
            {
                Account_now.setAccountpassword(password2);
                System.out.println("当前账户密码修改成功");
                PrintWriter out=null;
                try
                {
                    OutputStream f = new FileOutputStream("accountlist.txt",true);
                    out=new PrintWriter(f);
                } catch (FileNotFoundException e)
                {
                    e.printStackTrace();
                }
                out.printf("%s修改密码为%d\r\n",Account_now.getAccountID(),password2);
                out.printf("%s\r\n",Account_now.getOperatedate());
                out.close();
            }
            else
            {
                System.out.println("修改密码与确认密码不一致");
            }
        }
        else
        {
            System.out.println("当前密码录入错误");
        }
        
    }

    public void inquiry_balance()
    {
        System.out.printf("当前账户余额为：%d元\n",Account_now.getAccountbalance());
        System.out.println("账户清单信息为：\n");
        Scanner in=null;
        try
        {
            in = new Scanner(Paths.get("accountlist.txt"));
        } catch (IOException e)
        {
            e.printStackTrace();
        }
        while (in.hasNextLine())
        {
            System.out.println(in.nextLine());
        }
        
    }
}

AccountTest.java

 1 package account;

/**
 * @author 韩一祺
 * 
 *         班级 信1705-3 学号 20173475
 */
public class AccountTest
{
    public static void main(String[] args)
    {
        AccountManager a = new AccountManager();
        a.GUI();
    }
}