1、银行卡部分的代码
public class BankCard {
private int id;
private int passwd;
private int money;
public BankCard(int id,int passwd){
this.id =id;
this.passwd = passwd;
this.money = 0;
}
public int getId() {
return id;
}
public int getPasswd() {
return passwd;
}
public void saveMoney(int money){
this.money+=money;
}
public void withdraw(int money){
if(this.money >= money) {
this.money -= money;
}else{
System.out.println("取钱失败");
}
}
public int getMoney(){
return money;
}
}
2、银行部分的代码
import java.util.Arrays;
public class Bank {
private BankCard[]cards;
private int size;
private final int INITCAPACITY;
public Bank(){
cards = new BankCard[10];
size = 0;
INITCAPACITY = 10;
}
public BankCard[] getCards(){
return cards;
}
private void ensureCapacity(int capacity){
if(capacity == cards.length){
cards = Arrays.copyOf(cards,cards.length+(cards.length>>1));
}
}
public void add(BankCard card){
ensureCapacity(size);
cards[size] = card;
size++;
}
public int getSize(){
return size;
}
}
3、测试代码
public class Test{
public static void main(String[] args) {
ATM atm = new ATM();
atm.operator();
}
}
4、ATM机部分代码
import java.util.Scanner;
public class ATM {
private Bank bankGS;
private Bank bankNH;
public ATM(){
bankGS = new Bank();
bankNH = new Bank();
}
private BankCard searchCard(Bank bank,int id,int passwd){
BankCard[] arr = bank.getCards();
for(int i=0;i<bank.getSize();i++){
if(arr[i].getId() == id && arr[i].getPasswd() == passwd){
return arr[i];
}
}
return null;
}
private BankCard login(String bankName,int id,int passwd){
if(bankName.equals("农业银行")) {
return searchCard(bankNH,id, passwd);
}else if(bankName.equals("工商银行")){
return searchCard(bankGS,id,passwd);
}
return null;
}
public void operator(){
while (true) {
System.out.println("1.登陆 2.注册 3.退出");
Scanner scanner = new Scanner(System.in);
int chioce = scanner.nextInt();
if (chioce == 3) {
return;
}
System.out.println("请输入银行名:农业银行or工商银行");
String bankName = scanner.next();
System.out.println("请输入账号:");
int id = scanner.nextInt();
System.out.println("请输入密码:");
int passwd = scanner.nextInt();
switch (chioce) {
case 1:
BankCard successCard = login(bankName,id, passwd);
if (successCard != null) {
loginSuccessOperator(successCard);
} else {
System.out.println("登陆失败");
}
break;
case 2:
BankCard card = register(bankName,id, passwd);
if(card != null){
System.out.println("注册成功");
}else{
System.out.println("注册失败");
}
break;
}
}
}
private void loginSuccessOperator(BankCard card){
while(true) {
System.out.println("1.存钱 2.取钱 3.转账 4.查余额 5.退卡");
Scanner scanner = new Scanner(System.in);
int chioce = scanner.nextInt();
if (chioce == 5) {
return;
}
switch (chioce) {
case 1:
System.out.println("输入存款金额:");
int money = scanner.nextInt();
card.saveMoney(money);
break;
case 2:
System.out.println("输入取款金额:");
money = scanner.nextInt();
card.withdraw(money);
break;
case 3:
transfer(card);
break;
case 4:
System.out.println("当前余额:" + card.getMoney());
break;
}
}
}
private void transfer(BankCard card){
Scanner scanner = new Scanner(System.in);
System.out.println("请输入转账银行名:");
String bankName = scanner.next();
System.out.println("请输入转账用户id:");
int id = scanner.nextInt();
if(bankName.equals("农业银行")){
BankCard[] arr = bankNH.getCards();
for (int i = 0; i < bankNH.getSize(); i++) {
if (arr[i].getId() == id) {
System.out.println("转账金额:");
int money = scanner.nextInt();
if (money <= card.getMoney()) {
card.withdraw(money);
arr[i].saveMoney(money);
} else {
System.out.println("转账失败");
}
}
}
}
if(bankName.equals("工商银行")){
BankCard[] arr = bankGS.getCards();
for (int i = 0; i < bankGS.getSize(); i++) {
if (arr[i].getId() == id) {
System.out.println("转账金额:");
int money = scanner.nextInt();
if (money <= card.getMoney()) {
card.withdraw(money);
arr[i].saveMoney(money);
} else {
System.out.println("转账失败");
}
}
}
}
}
private BankCard register(String bankName,int id,int passwd){
//是否之前存在这张卡
BankCard card = new BankCard(id,passwd);
if(bankName.equals("农业银行")) {
BankCard searchCard = searchCard(bankNH, id, passwd);
if (searchCard != null) {
System.out.println("注册失败");
return null;
}
bankNH.add(card);
}
if(bankName.equals("工商银行")){
BankCard searchCard = searchCard(bankGS, id, passwd);
if (searchCard != null) {
System.out.println("注册失败");
return null;
}
bankGS.add(card);
}
return card;
}
}