「取款java」取款机

博主:adminadmin 2022-11-24 03:31:05 56

本篇文章给大家谈谈取款java,以及取款机对应的知识点,希望对各位有所帮助,不要忘了收藏本站喔。

本文目录一览:

JAVA存取款的数值不准确,要如何改进?

java中的

double在

运算时会有误差,有时候会出现小数点很长的那些数。

在用double值

做运算的时候,你可以先把他们转换为bigDecima类型的后再进行运算

Java编程自动取款机步骤

Java编写的模拟ATM取款机程序/*** @version 1.0

* @author Devil_Angel

* 该程序的功能为实现模拟银行ATM自动取款机提款,查询等功能.

*

*/import java.io.*;/*该类为实现客户信息及部分功能*/

class Account {

private String code =null; //信用卡号

private String name =null; //客户姓名

private String password=null; //客户密码

private double money =0.0; //卡里金额

/********************/

public Account(String code,String name,String password,double money)

{

this.code=code;

this.name=name;

this.password=password;

this.money=money;

}

protected String get_Code() {

return code;

}

protected String get_Name() {

return name;

}

protected String get_Password() {

return password;

}

public double get_Money() {

return money;

}

/*得到剩余的钱的数目*/

protected void set_Balance(double mon) {

money -= mon;

}

}/**********实现具体取款机功能*********/

class ATM {

Account act;

// private String name;

// private String pwd;

public ATM() {

act=new Account("000000","Devil","123456",50000);

}

/***********欢迎界面***********/

protected void Welcome()

{

String str="---------------------------------";

System.out.print(str+"\n"+

"欢迎使用Angel模拟自动取款机程序.\n"+str+"\n");

System.out.print(" 1.取款."+"\n"+

" 2.查询信息."+"\n"+

" 3.密码设置."+"\n"+

" 4.退出系统."+"\n");

}

/**********登陆系统**********/

protected void Load_Sys() throws Exception

{

String card,pwd;

int counter=0;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

do {

System.out.println("请输入您的信用卡号:");

card=br.readLine();

System.out.println("请输入您的密码:");

pwd=br.readLine();

if(!isRight(card,pwd))

{

System.out.println("您的卡号或密码输入有误.");

counter++;

}

else

SysOpter();

}while(counter3);

Lock_Sys();

}

/**********系统操作**********/

protected void SysOpter() throws Exception

{

int num;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("请选择您要操作的项目(1-4):");

num=br.read(); //num为ASICC码转换的整数

switch(num) {

case 49: BetBalance(); break;

case 50: Inqu_Info(); break;

case 51: Set_Password(); break;

case 52: Exit_Sys(); break;

}

System.exit(1);

}

/**********信息查询**********/

protected void Inqu_Info() {

System.out.print("---------------------\n"+

act.get_Code()+"\n"+

act.get_Name()+"\n"+

act.get_Money()+"\n"+

"-----------------------");

}

/**********取款**********/

public void BetBalance() throws Exception

{

String str=null,str1;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

do {

System.out.println("请输入您要取的数目:");

str=br.readLine();

str1=String.valueOf(act.get_Money());

if(str.compareTo(str1)0) {

System.out.println("超过已有的钱数,请重新输入您要取的数目:");

}

else {

/*操作成功*/

// act.set_Balance(str);

System.out.println("取款成功,请收好您的钱.");

Welcome();

SysOpter();

}

}while(true);

}

/**********判断卡内是否有钱**********/

protected boolean isBalance() {

if(act.get_Money()0) {

// System.out.println("对不起,您的钱数不够或卡已透支.");

return false;

}

return true;

}

/********卡号密码是否正确******/

protected boolean isRight(String card,String pwd)

{

if(act.get_Code().equals(card) act.get_Password().equals(pwd))

return true;

else

return false;

}

/**********密码修改**********/

protected void Set_Password() throws Exception

{

String pwd=null;

int counter=0;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

do {

System.out.println("请输入旧密码:");

pwd=br.readLine();

if(act.get_Password().equals(pwd))

{

do {

System.out.println("请输入新密码:");

String pwd1=br.readLine();

System.out.println("请再次输入新密码:");

String pwd2=br.readLine();

if(!pwd1.equals(pwd2))

{

System.out.println("两次输入不一致,请再次输入.");

}

else

{

System.out.println("密码修改成功,请使用新密码.");

Welcome();

SysOpter();

}

}while(true);

}

}while(counter3);

}

/**********锁定机器**********/

protected void Lock_Sys() {

System.out.println("对不起,您的操作有误,卡已被没收.");

System.exit(1);

}

/**********结束系统**********/

protected void Exit_Sys() {

System.out.println("感谢您使用本系统,欢迎下次在来,再见!");

System.exit(1);

}

}public class Text

{

public static void main(String[] args) throws Exception

{

ATM atm=new ATM();

atm.Welcome();

atm.Load_Sys();

// atm.Exit_Sys();

}

} //模拟ATM取款机工作流程 import java.util.Scanner;public class Atm {

public Atm() {

}

public static void main(String[] args) {

// TODO code application logic here

Scanner sc = new Scanner(System.in);

int password = 0;

int count = 0;

int choice = 0;

int type = 0;

int input = 0;

int acount = 1000;

boolean exit = false;

int flag = 0;

do{

System.out.println("请输入您的密码:");

password = sc.nextInt();

count++;

}while(password != 12345 count3);

if(password == 12345){

//密码正确继续后面的操作。

do{

System.out.println("请选择您的操作,1.查询 2.取款");

choice = sc.nextInt();

switch(choice){

case 1:

do{

System.out.println("请选择帐户类型:1. 美元 2. 人民币");

type = sc.nextInt();

if(type == 1){

System.out.println("You have $"+acount+"!");

}else if(type == 2){

System.out.println("您有"+acount+"圆!");

}else{

System.out.println("类型选择错误,请重新选择!");

}

System.out.println("1.继续 2.离开");

flag = sc.nextInt();

if(flag == 1){

exit = false;

}else{

exit = true;

}

}while(type!=1 type!=2);

break;

case 2: do{

System.out.println("请选择帐户类型:1. 美元 2. 人民币");

if(type == 1){

System.out.println("Please input number of your money!");

input = sc.nextInt();

if(input acount){

System.out.println("You have not enough money!");

}else{

System.out.println("You take care of your money!");

}

System.out.println("1.continue 2.exit");

flag = sc.nextInt();

if(flag == 1){

exit = false;

}else{

exit = true;

}

}else if(type == 2){

System.out.println("请输入您要取的金额!");

input = sc.nextInt();

if(input acount){

System.out.println("您的余额不足!");

}else{

System.out.println("请妥善保管您的钱!");

acount = acount - input;

}

System.out.println("1.继续 2.离开");

flag = sc.nextInt();

if(flag == 1){

exit = false;

}else{

exit = true;

}

}else{

System.out.println("类型选择错误,请重新选择!");

}

}while(type!=1 type!=2);

break;

default: System.out.println("类型选择错误,请重新选择!");

}

}while(choice!=1 choice!=2 || exit == false);

}else{

//密码错误,退出。

System.out.println("三次密码错误,吞卡!");

}

}

}

如何用Java线程实现银行的存款取款问题最好能写出编出的具体程序

AccountTest.java class BankAccount //定义银行账户类BankAccount{private static int amount =2000; //账户余额最初为2000public void despoit(int m) //定义存款的方法{amount=amount+m;System.out.println("晓明存入["+m+"元]");}public void withdraw(int m) //定义取款的方法{amount=amount-m;System.out.println("张新取走["+m+"元]");if(amount0)System.out.println("***余额不足!***);public int balance() //定义得到账户余额的方法{return amount;}}classicCustomerextendsThread {String name;BankAccount bs; //定义一个具体的账户对象public Customer(BankAccount b,String s){name=s;bs=b;}public static void cus(String name,BankAccount bs) //具体的账户操作方法{if(name.equals("小明")) //判断用户是不是小明{try{for(int i=0;i6;i++) //用户晓明则向银行存款6次,每次1000元 {Thread.currentThread().sleep((int)(Math.random()*300));bs.despoit(1000);}}catch(InterruptedException e){}}else{try{for(int i=0;i6;i++) //用户不是小明则从银行取款6次,每次1000元{Thread.currentThread().sleep((int)(Math.random()*300));bs.withdraw(1000); }}catch(InterruptedException e){} }}public void run() //定义run方法}cus(name,bs); }}public classAccountTest{public static void main(String [] args) throws InterruptedException{BankAccount bs=new BankAccount();Customer customer1=new Customer(bs,"小明");Customer customer2=new Customer(bs,"张新");Thread t1=new Thread(customer1);Thread t2=new Thread(customer2);t1.Start();t2.start();Thread.currentThread().sleep(500);}}

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发布于:2022-11-24,除非注明,否则均为首码项目网原创文章,转载请注明出处。