序列化，反序列化，模拟ATM机

package com.bank.unionpay;

//银行卡的接口
public interface I_yinhangka
{

	//抽象方法
	//public abstract默认修饰抽象的

	public abstract void cxyue();//查询余额

	void  cunkuan();//存款

	void qukuan();//取款

	void accound();//账户

}

　　

package com.bank.unionpay;

public abstract class Atm implements I_yinhangka
{
	String leixing;//银行卡类型
	String accound;//账户
	double qukuan;//取款
	double cunkuan;//存款
	double cxyue ;//余额
	String name;
	String sfzheng;//省份证号

	public Atm(String name,String sfzheng,String accound, double cxyue ) {
		super();
		this.accound = accound;
		this.cxyue = cxyue;
		this.name = name;
		this.sfzheng = sfzheng;
	}

	public Atm() {
		super();
	}

	@Override
	public void cxyue()
	{
		// 查询余额
		cxyue-=qukuan;
		cxyue+=cunkuan;

		System.out.println("您的余额="+cxyue);
	}

	@Override
	public void cunkuan()
	{
		// 存款
		cxyue+=cunkuan;

		System.out.println("存款成功，您的存款金额为"+cunkuan);
        System.out.println("本次操作后您的余额为："+cxyue);
	}

	@Override
	public void qukuan()
	{
		// 取款
		cxyue-=qukuan;
		if(cxyue>=0)
		{
			System.out.println("取款成功，本次取款金额= "+qukuan);
			System.out.println("本次操作后您的余额= "+cxyue);
		}
		else
		{
			System.out.println("余额不足，无法取款");

		}

	}

	@Override
	public void accound() {
		// 账户

	}

	//声明成员方法
	public double qukuan(double qukuan)//取款
	{
		cxyue-=qukuan;
		if(cxyue>=0)
		{
			System.out.println("取款成功，本次取款金额= "+qukuan);
			System.out.println("本次操作后您的余额= "+cxyue);
		}
		else
		{
			System.out.println("余额不足，无法取款");

		}
		return qukuan;

	}

	public double cunkuan(double cunkuan)//存款
	{

		cxyue+=cunkuan;

		System.out.println("存款成功，您的存款金额为"+cunkuan);
        System.out.println("本次操作后您的余额为："+cxyue);
		return cunkuan;
	}

	public double cxyue(double cxyue)
	{
		cxyue-=qukuan;
		cxyue+=cunkuan;

		System.out.println("您的余额="+cxyue);
		return cxyue;
	}

	//添加开户的抽象方法
	public abstract void kaihu();

}

　　

package com.bank.unionpay;

import java.util.ArrayList;
import java.util.List;

public class Zhujiemian {

	public void zhujiemian()
	{
		System.out.println("银行自助终端系统");
		System.out.println();
		System.out.println("************************");
		List<String> li=new ArrayList<>();
		li.add("开户");
		li.add("查询");
		li.add("存款");
		li.add("取款");
		li.add("退出");

		for(int i=0;i<5;i++)
		{
			System.out.println(i+"------"+li.get(i));
		}
		System.out.println();
		System.out.println("请选择您要执行的功能");
	}

}

　　

package com.bank.unionpay;

//银行枚举类型
public enum Leixing
{

	ABC("农行"),ICBC("工行"),CCB("建行"),BOC("中行");

	private   final String leixing;

	public String getLeixing()
	{
		return this.leixing;
	}

	//构造方法
	private Leixing(String leixing)
	{
		this.leixing=leixing;
	}

}

　　

package com.bank.abc;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.bank.unionpay.Leixing;

//单利模式
public class Bank implements Serializable
{
	private Bank()//禁止外部访问构造方法
	{

	}
	private static Bank  bank=new Bank();//内部产生唯一实例
	public static Bank  getBank()//开放一个方法给调用者返回这个实例
	{
		return bank;
	}

	final Leixing lx=Leixing.ABC;//农行类型

	private String yhName;//银行名称

	public List <String>card=new ArrayList<>();//银行卡列表

	public Map<String, CxCard > account=new HashMap<>();//账号储蓄卡集合

}

　　

package com.bank.abc;

import java.util.Random;
import java.util.Scanner;

import com.bank.unionpay.Atm;
import com.bank.unionpay.Leixing;

public class Atm2 extends Atm
{

	 public CxCard cx=new  CxCard();//

	public Atm2(String name, String sfzheng, String accound, double cxyue) {
		super(name, sfzheng, accound, cxyue);
		// TODO 自动生成的构造函数存根
	}

	public  Atm2() {
		// TODO 自动生成的构造函数存根
		super();
	}

	final Leixing lx = Leixing.ABC;

	@Override
	public void kaihu()// 实现开户
	{
		System.out.println("您选择的为开户功能");
		Scanner sc0=new Scanner(System.in);
		System.out.println("请输入姓名");
		cx.name=sc0.nextLine();

		for(int i=1;i>0;i++)
		{
			System.out.println("请输入身份证号");
			cx.sfzheng=sc0.nextLine();

				if(cx.sfzheng.length()==18)//判断身份证
				{

					for(int j=1;j>0;j++)
					{

						System.out.println("请输入密码");
						String mm="\\d{6}";//6位数字正则表达式
						cx.password=sc0.nextLine();
						if(cx.password.matches(mm))
						{

							cx.setPassword(cx.password);//写入密码

							Random  ra=new Random();//随机生成6位卡号
							int[] ch=new int[6];
							StringBuilder str=new StringBuilder();
							String s;//用于下面拼接
							for(int k=0;k<6;k++)
							{
								ch[k]=ra.nextInt(9);//0-9
							}

							for(Integer c:ch)
							{
							str.append(c.toString());//遍历  拼接6位数字
							}
							s=str.toString();
							cx.setCairNumber(s);//写入卡号

							Bank.getBank().card.add(cx.getCairNumber());//将生成的储蓄卡号存到银行的银行卡列表中

							Bank.getBank().account.put(cx.getCairNumber(), cx); //id+储蓄卡对象
							System.out.println("开户成功");
							System.out.println("您的账号为： "+cx.getCairNumber());

							break;
						}

						else
						{
							System.out.println("请输入6位纯数字密码");
						}
					}

				break;
				}

				else
				{
					System.out.println("请重新输入身份证号");

				}
		}	

	}

}

　　

package com.bank.abc;

import java.io.Serializable;
import java.util.Scanner;

import com.bank.unionpay.Leixing;

//储蓄卡
//只有实现了Serializable和Externalizable接口的类的对象才能被序列化。
public class CxCard implements Serializable 

{
	//属性
	final Leixing lx=Leixing.ABC;
	String  name;//姓名
	String sfzheng;//身份证号
	String cairNumber;//卡号
	String password;//密码
	double cxyue ;//余额

	//生成卡号的get   set方法

	public String getCairNumber() {
		return cairNumber;
	}

	public void setCairNumber(String cairNumber) {
		this.cairNumber = cairNumber;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getSfzheng() {
		return sfzheng;
	}

	public void setSfzheng(String sfzheng) {
		this.sfzheng = sfzheng;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public double getCxyue() {
		return cxyue;
	}

	public void setCxyue(double cxyue) {
		this.cxyue = cxyue;
	}

	public CxCard(String name, String sfzheng, String cairNumber, String password, double cxyue) {
		super();
		this.name = name;
		this.sfzheng = sfzheng;
		this.cairNumber = cairNumber;
		this.password = password;
		this.cxyue = cxyue;
	}

	@Override
	public String toString() {
		return "姓名：" + name + "\n"+" 身份证：" + sfzheng + "\n"+"卡号： " + cairNumber +"\n"+ " 余额：" + cxyue;
	}

	public CxCard() {
		// TODO 自动生成的构造函数存根
	}

//声明成员方法
public void qukuan()//取款
{
	if(true)
	{
		System.out.println("您选择的为取款功能");
		for(int i=1;i>0;i++)
		{
			Scanner sc1=new Scanner(System.in);

			System.out.println("请输入您要取款的卡号");
			 cairNumber=sc1.nextLine();
			if(Bank.getBank().account.containsKey(getCairNumber()))//判断卡号是否存在
			{
				for(int h=0;h<4;h++)
				{
					h=h+1;

					System.out.println("请输入密码");

					String passwordshuru=sc1.nextLine();

						if(passwordshuru.equals(Bank.getBank().account.get(cairNumber).getPassword()))//判断密码
						{
							System.out.println("您要取款的账号信息为：");
							System.out.println("****************");

							//遍历卡号
							for(String k:Bank.getBank().account.keySet())
							{
								System.out.println("账号： "+k);
								//通过k便利values的账户信息
								System.out.println(Bank.getBank().account.get(k));
							}
							System.out.println("请输入您要取款的金额");
							Scanner qukuan=new Scanner(System.in);
							double qk=qukuan.nextDouble();

							if(qk>=0)
							{
								//通过k获取v里面的余额，减去取款金额生成余额
								cxyue=Bank.getBank().account.get(cairNumber).getCxyue() -qk;

								System.out.println(cxyue);

								if(cxyue>=0)
								{
									Bank.getBank().account.get(cairNumber).setCxyue(cxyue);
									System.out.println("取款成功，本次取款金额= "+qk);

									System.out.println("本次操作后您的余额= "+Bank.getBank().account.get(cairNumber).getCxyue());
								}

							}
							else
							{
							System.out.println("余额不足，无法取款");

							}

						break;
						}
						else
						{
							System.out.println("请重新输入密码,还剩"+(4-h)+"次");
						}

					}

				break;
				}

		}

	}

}

public void cunkuan()//存款
{

	if(true)
	{
		System.out.println("您选择的为存款功能");
		for(int i=1;i>0;i++)
		{
			Scanner sc1=new Scanner(System.in);

			System.out.println("请输入您要存款的卡号");
			 cairNumber=sc1.nextLine();
			if(Bank.getBank().account.containsKey(getCairNumber()))//判断卡号是否存在
			{
				for(int h=0;h<4;h++)
				{
					h=h+1;

					System.out.println("请输入密码");

					String passwordshuru=sc1.nextLine();

						//判断如果输入的密码和通过k找到v里面存的密码一致，输出信息
					if(passwordshuru.equals(Bank.getBank().account.get(cairNumber).getPassword()))//判断密码
						{
							System.out.println("您要存款的账号信息为：");
							System.out.println("****************");

							//遍历卡号
							for(String k:Bank.getBank().account.keySet())
							{
								System.out.println("账号： "+k);
								System.out.println(Bank.getBank().account.get(k));
							}
								System.out.println("请输入您要存入的金额");
								Scanner cunkuan1=new Scanner(System.in);
								double ck=cunkuan1.nextDouble();
								if(ck>=0)
								{
									cxyue+=ck;

									System.out.println("存款成功，您的存款金额为"+ck);
									//把操作后的余额写进集合
									Bank.getBank().account.get(cairNumber).setCxyue(cxyue);
								    System.out.println("本次操作后您的余额为："+Bank.getBank().account.get(cairNumber).getCxyue());

								}
								else
								{
									System.out.println("你输入的数据无效，系统将自动退出！谢谢使用");
								}

							break;
							}
						else
						{
							System.out.println("请重新输入密码,还剩"+(4-h)+"次");
						}
				}

			break;
			}
			else
			{
				System.out.println("该卡号不存在，请重新输入要查询的卡号");
			}

		}
	}	

}

public void cxyue()//查询
{

	if(true)
	{
		System.out.println("您选择的为查询功能");
		for(int i=1;i>0;i++)
		{
			Scanner sc1=new Scanner(System.in);

			System.out.println("请输入您要查询的卡号");
			cairNumber=sc1.nextLine();
			if(Bank.getBank().account.containsKey(getCairNumber()))//判断卡号是否存在
			{
				for(int h=0;h<3;h++)
				{
					h=h+1;

					System.out.println("请输入密码");

					String passwordshuru=sc1.nextLine();

					//判断密码
					if(passwordshuru.equals(Bank.getBank().account.get(cairNumber).getPassword()))
					{
						System.out.println("您查询的账号信息为：");
						System.out.println("****************");

						//遍历卡号
						for(String k:Bank.getBank().account.keySet())
						{
							System.out.println("账号： "+k);
							//通过k遍历values的信息
							System.out.println(Bank.getBank().account.get(cairNumber));
						}
						break;
					}
					else
					{
						System.out.println("请重新输入密码,还剩"+(4-h)+"次");
					}

				}
						//System.out.println("密码输入超过三次，自动退出系统");
				break;
			}
			else
			{
				System.out.println("该卡号不存在，请重新输入要查询的卡号");
			}

		}

	}

}

}

　　

package com.bank.test;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

import com.bank.abc.Atm2;
import com.bank.abc.Bank;
import com.bank.abc.CxCard;
import com.bank.unionpay.Atm;
import com.bank.unionpay.Leixing;
import com.bank.unionpay.Zhujiemian;

public class A
{

	public static void main(String[] args) throws Exception
	{
		// TODO 自动生成的方法存根

		Leixing[] l= Leixing.values();

		for(Leixing x:l)
		{
			System.out.println("银行卡类型的枚举="+x);
		}

		System.out.println("*************************");

		try
		{
		ObjectInputStream in1=new ObjectInputStream(new FileInputStream("d:/abc122/abc.obj"));
		 Map<String, CxCard > account1=(Map<String, CxCard>) in1.readObject();
		 Bank.getBank().account=account1;
		 //System.out.println(Bank.getBank().account);
		}
		catch(Exception e)
		{

		}

		for(int i=1;i>0;i++)
		{
			Zhujiemian zjm=new Zhujiemian();
			zjm.zhujiemian();

				Scanner sc=new Scanner(System.in);
				int in=sc.nextInt();
				if(in==0||in==1||in==2||in==3||in==4)
				{

					if(in==0)

					{//测试开户
						Atm2  a2=new Atm2();
						a2.kaihu();
						continue;
					}
					//查询
					if(in==1)
					{
						Atm2  a2=new Atm2();
						a2.cx.cxyue();
						continue;
					}

					if(in==2)
					{
						//存款
						Atm2  a2=new Atm2();
						a2.cx.cunkuan();
						continue;
					}
					if(in==3)
					{
						//取款
						Atm2  a2=new Atm2();
						a2.cx.qukuan();
						continue;
					}
					if(in==4)
					{
						//退出
						System.out.println("系统即将退出");

						File fi=new File("d:/abc122");
						if(!fi.exists())
						{
							fi.mkdirs();
						}
						ObjectOutputStream obj=new ObjectOutputStream(new FileOutputStream("d:/abc122/abc.obj"));
						obj.writeObject(Bank.getBank().account);
						System.out.println("数据保存完成");
						obj.close();

						break;

					}

				}
				else
				{
					System.out.println("该菜单不存在");
				}

		}

	}

}