案例ATM系统
大致思路：
实现功能：
案例代码：
Account类：
packageatmDemo;
publicclassAccount{
privateStringcardId;
privateStringuserName;
privatecharsex;
privateStringpassWord;
privatedoublemoney;
privatedoublelimit;
publicStringgetCardId(){
returncardId;
}
publicvoidsetCardId(StringcardId){
this.cardId=cardId;
}
publicStringgetUserName(){
returnuserName;
}
publicvoidsetUserName(StringuserName){
this.userName=userName;
}
publicchargetSex(){
returnsex;
}
publicvoidsetSex(charsex){
this.sex=sex;
}
publicStringgetPassWord(){
returnpassWord;
}
publicvoidsetPassWord(StringpassWord){
this.passWord=passWord;
}
publicdoublegetMoney(){
returnmoney;
}
publicvoidsetMoney(doublemoney){
this.money=money;
}
publicdoublegetLimit(){
returnlimit;
}
publicvoidsetLimit(doublelimit){
this.limit=limit;
}
}
ATM类：
packageatmDemo;
importjava.util.ArrayList;
importjava.util.Random;
importjava.util.Scanner;
publicclassATM{
privateArrayList<Account>accounts=newArrayList<>();
privateScannersc=newScanner(System.in);
AccountloginAccount;
//欢迎界面
publicvoidstart(){
System.out.println("======欢迎来到天地银行======");
while(true){
System.out.println("请输入您想办理的业务：");
System.out.println("1.用户登录");
System.out.println("2.办理开户");
Stringcommand=sc.next();
switch(command){
case"1":
loginAcc();
break;//登录
case"2":
createAcc();
break;//开户
default:
System.out.println("您输入的业务编号有误，请重新输入！！！");
}
}
}
privatevoidcreateAcc(){
Accountacc=newAccount();
accounts.add(acc);//将创建的对象添加到集合里
System.out.println("请您输入您的姓名：");
Stringname=sc.next();
acc.setUserName(name);
while(true){
System.out.println("请您输入您的性别：");
Stringsex=sc.next();
if(sex.charAt(0)=='男'||sex.charAt(0)=='女')
{acc.setSex(sex.charAt(0));
break;
}
else{
System.out.println("您的输入有误~~~~");
}
}
while(true){
System.out.println("请您设置您的密码：");
Stringpassword=sc.next();
System.out.println("请您确认您的密码：");
StringokPassword=sc.next();
if(password.equals(okPassword)){
acc.setPassWord(password);
System.out.println("密码设置完成！！");
break;
}else{
System.out.println("请您重新输入~~");
}
}
while(true){
System.out.println("请您设置您的每次提现额度：");
doublelimit=sc.nextDouble();
if(limit>=0){
acc.setLimit(limit);break;
}
{
System.out.println("输入错误，请您重新输入！");
}
}
Randomr=newRandom();
while(true){
StringcardNum="";
for(inti=0;i<8;i++){
intran=r.nextInt(9);
cardNum+=ran;
}
if(acc==check(cardNum)){
}
else{
acc.setCardId(cardNum);
System.out.println("开户成功，您的卡号为："+cardNum);
break;
}
}
}
//查找用户
privateAccountcheck(StringcardNum){
for(inti=0;i<accounts.size();i++){
if(cardNum.equals(accounts.get(i).getCardId())){
returnaccounts.get(i);
}
}
returnnull;
}
privatevoidloginAcc(){
Accountaccount=newAccount();
while(true){
if(accounts.size()==0){
System.out.println("当前银行无账户信息，请您先去开户！");return;
}
System.out.println("请您输入卡号：");
StringcardNum=sc.next();
if(check(cardNum)==null){
System.out.println("输入错误，请您检查！并重新输入。");
}
else{
account=check(cardNum);
System.out.println("请您输入密码：");
Stringpass=sc.next();
if(pass.equals(account.getPassWord())){
System.out.println("恭喜您！登陆成功."+account.getUserName()+"用户，您的卡号为："+cardNum);
System.out.println(account.getUserName()+"用户,您已经成功进入系统，您可以回复编号选择办理以下业务：");
loginAccount=account;
showSer();
return;//跳出登录页面
}
break;}
}
}
privatevoidshowSer(){
while(true){
System.out.println("1.查询帐户信息");
System.out.println("2.存款");
System.out.println("3.取款");
System.out.println("4.转账");
System.out.println("5.修改密码");
System.out.println("6.退出");
System.out.println("7.注销账户");
intcom=sc.nextInt();
switch(com){
case1:checkInfo();
break;
case2:addMoney();
break;
case3:takeMOney();
break;
case4:switchMonry();
break;
case5:changePass();
break;
case6:exit();
return;
case7:if(desACC()){
return;
}
break;
default:
System.out.println("您输入的指令有误，请重新输入~~");
}
}
}
privatevoidcheckInfo(){
System.out.println("======当前账户信息如下======");
System.out.println("用户名为："+loginAccount.getUserName());
System.out.println("卡号为："+loginAccount.getCardId());
System.out.println("当前账户余额为："+loginAccount.getMoney());
System.out.println("支付限额为："+loginAccount.getLimit());
}
privatevoidexit(){
System.out.println(loginAccount.getUserName()+"您已经成功退出系统~~");
}
privatevoidaddMoney(){
System.out.println("请您输入您要存款的金额：");
doublemoney=sc.nextDouble();
loginAccount.setMoney(loginAccount.getMoney()+money);
System.out.println("存款成功，您的账户现有余额为:"+loginAccount.getMoney());
}
privatevoidtakeMOney(){
System.out.println("请您输入要取款的金额：");
while(true){
doublemoney=sc.nextDouble();
if(money>loginAccount.getMoney()){
System.out.println("余额不足，您最多可以取出"+loginAccount.getMoney()+"元");
System.out.println("请您重新输入：");
}elseif(money>loginAccount.getLimit()){
System.out.println("对不起，您输入的金额超过了您的存取限额"+loginAccount.getLimit());
System.out.println("请您重新输入：");
}else{
loginAccount.setMoney(loginAccount.getMoney()-money);
System.out.println("取款成功，您的账户现有余额为:"+loginAccount.getMoney());
break;
}
}
}
privatevoidswitchMonry()
{
if(accounts.size()<2){
System.out.println("账户过少无法转账，请去开户");
return;
}
if(loginAccount.getMoney()==0){
System.out.println("余额不足，无法转账！");
}
else{
System.out.println("请您输入对方账户卡号：");
StringcardNum=sc.next();
if(check(cardNum)==null){
System.out.println("对不起，您输入的卡号不存在，请您重新输入！");
}
else{
Accountacc=check(cardNum);
Stringname="*"+acc.getUserName().substring(1);
System.out.println("请您输入对方的姓氏："+name);
while(true){
StringpreName=sc.next();
if(preName.charAt(0)==acc.getUserName().charAt(0))
{System.out.println("请您输入转账金额：");
while(true){
doublemoney=sc.nextDouble();
if(money>loginAccount.getMoney()){
System.out.println("余额不足，您最多可以转出"+loginAccount.getMoney()+"元");
System.out.println("请您重新输入：");
}elseif(money>loginAccount.getLimit()){
System.out.println("对不起，您输入的金额超过了您的存取限额"+loginAccount.getLimit());
System.out.println("请您重新输入：");
}
else{
loginAccount.setMoney(loginAccount.getMoney()-money);
acc.setMoney(acc.getMoney()+money);
System.out.println("转账已完成！！");
return;
}
}
}
else{
System.out.println("信息输入错误，认证失败，请重新认证！");
}
}
}
}
}
privatevoidchangePass(){
System.out.println("请您输入当前账户密码：");
while(true){
Stringpass=sc.next();
if(pass.equals(loginAccount.getPassWord())){
while(true){
System.out.println("请您输入修改后的密码:");
StringokPass=sc.next();
System.out.println("请您再次输入修改后的密码:");
StringokPass1=sc.next();
if(okPass.equals(okPass1)){
System.out.println("密码修改成功！");
return;
}
else{
System.out.println("两次输入不一致，请您重新输入！");
}
}
}
else{
System.out.println("当前密码错误！请您重新输入");
}
}
}
privatebooleandesACC(){
//销户操作
System.out.println("您真的打算销户吗？是/否");
Stringh=sc.next();
if(h.equals("是")){
if(loginAccount.getMoney()==0){
System.out.println("销户成功！");
returntrue;
}else{
System.out.println("您的账户还有余额，无法执行该操作！");
returnfalse;
}
}else{
returnfalse;
}
}
}
atmTest类：
packageatmDemo;
publicclassatmTest{
publicstaticvoidmain(String[]args){
ATMatm=newATM();
atm.start();
}
}
