模拟ATM的功能

import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.Scanner;
public class AccountManager {

public static void main(String[] args) {
LinkedList<Account> acc=new LinkedList<Account>();
Scanner shuru=new Scanner(System.in);
getInformation(acc);
int flag;
// System.out.println(acc.get(0).getAccountID());
// System.out.println(acc.size());
panding(acc);

}


// 判定账号
public static void panding(LinkedList<Account> acc) {
Scanner shuru = new Scanner(System.in);
int flag = 0;
int j=0;
String zhanghao;
while (flag == 0) {
System.out.println("***************************************************************");
System.out.println("    欢迎使用中国工商银行自动柜员系统");
System.out.println("****************************************************************");
System.out.println(" 请输入您的账号：");
System.out.println();
System.out.println("****************************************************************");
zhanghao = shuru.next();
//System.out.println(zhanghao);
if (zhanghao.length() != 8) {
System.out.println("该卡不是工行卡");
} else {
//System.out.println(zhanghao);
for (int i = 0; i < acc.size(); i++) {
if (zhanghao.equals(acc.get(i).getAccountID())) {
flag = 1;
j=i;
}
//System.out.println(j);

}
{
if (flag == 0) {
System.out.println("该账号不存在");
} else {
shurumima(acc,j);
}
}
}

}
}
//判定密码 a为固定的账户
public static void shurumima(LinkedList<Account> acc,int a)
{

int i=0;
while(i<3)
{    
System.out.println("***************************************************************");
System.out.printf("    欢迎 ");
System.out.print(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println(" 请输入您的密码：");
System.out.println();
System.out.println("****************************************************************");
String mima ;
Scanner shuru = new Scanner(System.in);
mima=shuru.next();
if(mima.equals(acc.get(a).getAccontpassword()))
{
i=5;
}
else {
System.out.println("密码录入错误");
i=i+1;
}
}
if(i==5)
{
gongneng(acc,a);
}
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");
}
}
//主界面
public static void gongneng(LinkedList<Account> acc, int a) {
String q="q";
while (q.equals("q")) {

System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.println("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println(" 1.存款");
System.out.println(" 2.取款");
System.out.println(" 3.转账汇款");
System.out.println(" 4.修改密码");
System.out.println(" 5.查询余额");
System.out.println();
System.out.println("****************************************************************");
int key = 0;
Scanner shuru = new Scanner(System.in);
key = shuru.nextInt();
acc.get(a).setOperatetype(key);
switch (key) {
case 1:
cunkuan(acc,a);
q=shuru.next();
break;
case 2:
qukuan(acc,a);
q=shuru.next();
break;
case 3:
zhuanzhang(acc,a);
q=shuru.next();
break;
case 4:
xiugai(acc,a);
q=shuru.next();
break;
case 5:
chaxun(acc,a);
q=shuru.next();
break;

}
}
}
public static void chaxun(LinkedList<Account> acc, int a)
{
getList(a, acc);
System.out.println("*************；**************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.printf(" 当前账户余额为：");
System.out.println(acc.get(a).getAccountbalance());
System.out.println("账户清单信息为：");
acc.get(a);
acc.get(a).setAmount(0);
acc.get(a).setOperatetype(5);
acc.get(a).setOperatedate("");
setList(a, acc);
System.out.println("****************************************************************");
}
public static void cunkuan(LinkedList<Account> acc, int a)
{
int qian;
int i=0;
while(i==0)
{
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println(" 请输入存款金额:");
System.out.println();
System.out.println("****************************************************************");
Scanner shuru = new Scanner(System.in);
qian=shuru.nextInt();    
if(qian>0)
{
int yue=0;
yue=acc.get(a).getAccountbalance()+qian;
acc.get(a).setAccountbalance(yue);
i=1;
acc.get(a).setAmount(qian);
acc.get(a).setOperatedate("");
setInformation(acc);
setList(a, acc);
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println(" 当前账户存款操作成功。");
System.out.printf(" 当前账户余额为：");
System.out.println(yue);
System.out.println();
System.out.println("****************************************************************");
}
else 
{
System.out.println("输入金额有误");
}
}
}

public static void xiugai (LinkedList<Account> acc, int a)
{
String mima="";
String mima1="";
String mima2="";
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println("请输入当前密码：:");
System.out.println("****************************************************************");
Scanner shuru = new Scanner(System.in);
mima=shuru.next();
if(mima.equals(acc.get(a).getAccontpassword()))
{
System.out.println("请输入修改密码:");
mima1=shuru.next();
System.out.println("请再输入修改密码:");
mima2=shuru.next();
if(mima1.equals(mima2))
{
acc.get(a).setAccontpassword(mima1);
acc.get(a).setOperatedate("");
setInformation(acc);
setList(a, acc);
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println("当前账户密码修改成功");
System.out.println("****************************************************************");
}
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");
}
}
//转账操作
public static void zhuanzhang(LinkedList<Account> acc, int a) {
int qian = 0;
String zhanghao = "";
int j = 0;
int flag = 0;
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println("请输入转账账户:");
System.out.println("****************************************************************");
Scanner shuru = new Scanner(System.in);
zhanghao = shuru.next();
for (int i = 0; i < acc.size(); i++) {
if (zhanghao.equals(acc.get(i).getAccountID())) {
j = i;
flag = 1;
}
}
if (flag == 1) {
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println("请输入转账金额:");
System.out.println("****************************************************************");
qian = shuru.nextInt();
if (qian < acc.get(a).getAccountbalance()) {

System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.println("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.printf("请确认是否向");
System.out.print(acc.get(j).getAccountname());
System.out.print(qian);
System.out.println("元。");
System.out.println("****************************************************************");
String f;
f=shuru.next();
if(f.equals("N"))
{
acc.get(j).setAmount(qian);
acc.get(a).setAccountbalance(acc.get(a).getAccountbalance()-qian);
acc.get(j).setOperatedate("");
setInformation(acc);
setList(a, acc);
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.println("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.printf("当前账户成功向");
System.out.print(acc.get(j).getAccountname());
System.out.print(qian);
System.out.println("元。");
System.out.println("****************************************************************");
}

} else {
System.out.println("账户余额不足");
}
} else {
System.out.println("该账户不存在");
}
}
public static void qukuan(LinkedList<Account> acc, int a)
{
int key=0;
int qian=0;
int i=0;
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println("1、100元");
System.out.println("2、500元");
System.out.println("3、1000元");
System.out.println("4、1500元");
System.out.println("5、2000元");
System.out.println("6、5000元；");
System.out.println("7、其他金额");
System.out.println("8、退卡");
System.out.println("9、返回");
Scanner shuru = new Scanner(System.in);
key=shuru.nextInt();
switch(key)
{
case 1:
if(acc.get(a).getAccountbalance()>100) 
{
qian =100;
acc.get(a).setAccountbalance(acc.get(a).getAccountbalance()-qian);
acc.get(a).setAmount(qian);
i=1;
}
else 
{
System.out.println("账户余额不足");
}
break;
case 2:
if(acc.get(a).getAccountbalance()>500) 
{
qian =500;
acc.get(a).setAccountbalance(acc.get(a).getAccountbalance()-qian);
acc.get(a).setAmount(qian);
i=1;
}
else 
{
System.out.println("账户余额不足");
}
break;
case 3:
if(acc.get(a).getAccountbalance()>1000) 
{
qian =1000;
acc.get(a).setAccountbalance(acc.get(a).getAccountbalance()-qian);
acc.get(a).setAmount(qian);
i=1;
}
else 
{
System.out.println("账户余额不足");
}
break;
case 4:
if(acc.get(a).getAccountbalance()>1500) 
{
qian =1500;
acc.get(a).setAccountbalance(acc.get(a).getAccountbalance()-qian);
acc.get(a).setAmount(qian);
i=1;
}
else 
{
System.out.println("账户余额不足");
}
break;
case 5:
if(acc.get(a).getAccountbalance()>2000) 
{
qian =2000;
acc.get(a).setAccountbalance(acc.get(a).getAccountbalance()-qian);
acc.get(a).setAmount(qian);
i=1;
}
else 
{
System.out.println("账户余额不足");
}
break;
case 6:
if(acc.get(a).getAccountbalance()>5000) 
{
qian =5000;
acc.get(a).setAccountbalance(acc.get(a).getAccountbalance()-qian);
acc.get(a).setAmount(qian);
i=1;
}
else 
{
System.out.println("账户余额不足");
}
break;
case 7:
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.println("请输入取款金额：");
System.out.println("****************************************************************");
qian=shuru.nextInt();
if(acc.get(a).getAccountbalance()>qian) 
{
acc.get(a).setAmount(qian);
acc.get(a).setAccountbalance(acc.get(a).getAccountbalance()-qian);
i=1;
}
else 
{
System.out.println("账户余额不足");
}
break;
case 8:
gongneng(acc,a);
break;
case 9:
panding(acc);
break;
}
acc.get(a).setOperatedate("");
setInformation(acc);
setList(a, acc);
getInformation(acc);
if(i==1)
{
System.out.println("***************************************************************");
System.out.printf("    欢迎");
System.out.printf(acc.get(a).getAccountname());
System.out.printf("    使用中国工商银行自助柜员系统");
System.out.println("****************************************************************");
System.out.printf("当前账户取款操作");
System.out.print(qian);
System.out.println("元成功。");
System.out.printf("当前账户余额为：");
System.out.print(acc.get(a).getAccountbalance());
System.out.println("元");
System.out.println("****************************************************************");
}
}
public static String getList(int i,LinkedList<Account> acc)//读取流水
{
try
{
FileReader fr=new FileReader("E:\\新建文件夹 (3)\\src\\java第一周学习2\\AccountList");
Scanner in=new Scanner(fr);
String iid=acc.get(i).getAccountID();
String id=new String();
String s=new String();
String sum="";
int z=1;
while(in.hasNextLine())
{
id=in.next();
if(iid.equals(id))
{
s=id+" "+in.nextLine()+"\n";
sum=sum+"( "+z+" )\t"+s;
z++;
}
}
fr.close();
in.close();
return sum;
}
catch(Exception e)
{
System.out.println("文件读取失败");
return "";
}
}
public static void setList(int i,LinkedList<Account> acc)//写入流水
{
try
{
Account a=acc.get(i);
FileWriter fw=new FileWriter("E:\\新建文件夹 (3)\\src\\java第一周学习2\\AccountList",true);
PrintWriter pw=new PrintWriter(fw);
pw.println(a.getAccountID()+" "+a.getAccountname()+" "+ a.getOperatedate()+" "+a.getOperatetype()+" "+a.getAmount());
pw.flush();
pw.close();
fw.close();
}
catch(Exception e)
{
System.out.println("文件写入失败");
}
}








public static void getInformation(LinkedList<Account> acc)//获得信息
{

try
{
FileReader fr=new FileReader("E:\\新建文件夹 (3)\\src\\java第一周学习2\\AccountInformation");
Scanner r=new Scanner(fr);
while(r.hasNext())
{
Account a=new Account();
a.setAccountID(r.next());
a.setAccontpassword(r.next());
a.setAccountname(r.next());
a.setAccountbalance(r.nextInt());
acc.add(a);
}
fr.close();
r.close();
}
catch(Exception e)
{
System.out.println("文件写入失败");
}
}
public static void setInformation(LinkedList<Account> acc)//写入信息
{
try
{
int i=0;
FileWriter fw=new FileWriter("E:\\新建文件夹 (3)\\src\\java第一周学习2\\AccountInformation");
PrintWriter pw=new PrintWriter(fw);
for(i=0;i<acc.size();i++)
{

pw.println(acc.get(i).getAccountID()+" "+acc.get(i).getAccontpassword()+" "+ acc.get(i).getAccountname()+" "+acc.get(i).getAccountbalance());
}
pw.flush();
pw.close();
fw.close();
}
catch(Exception e)
{
System.out.println("文件写入失败");
}
}

}