Ферганский филиал ташкентского университета информационных технологий имени мухаммада ал-хоразмий

ПРАКТИЧЕСКАЯ ЧАСТЬ

package ATM;

import Bank.BankService;

import Server.CheckProcessing;
import Server.DataProcessing;
import org.xml.sax.SAXException;

import javax.xml.parsers.ParserConfigurationException;

import java.math.BigDecimal;
import java.util.Objects;
import java.util.Scanner;

public class Atm {

private static final Scanner scan = new Scanner(System.in);
private static BigDecimal check;
private static Integer cardnumber;

private static void CheckSum(BigDecimal sum) {

if (check != null && check.compareTo(sum) < 0) {
System.out.println("Insufficient funds in the account.");
ReturnMenu();
}
}

private static void ReturnMenu() {

System.out.println("""
Back to main menu?
Yes - 1
No - 2
""");
System.out.print("Select: ");
int J = scan.nextInt();
if (J == 1) {
Interaction();
} else {
System.out.println("Take your card");
System.exit(0);
}
}

private static void Interaction() {

System.out.println("""
Select an action:
1. - Balance check
2. - Card transfer (1%)
3. - Withdraw cash (1%)
4. - Replenish the balance
5. - Cancellation of operations
""");
System.out.print("Select: ");
int i = scan.nextInt();
switch (i) {
case 1 -> {
System.out.println("Balance: " + "$" + check);
ReturnMenu();
}
case 2 -> {
System.out.print("Enter card number: ");
int card = scan.nextInt();
if (card == cardnumber) {
System.out.println("You cannot transfer money to your own card");
ReturnMenu();
}
System.out.print("Enter amount: ");
BigDecimal SUM = scan.nextBigDecimal();
CheckSum(SUM);
check = check.subtract(SUM.multiply(new BigDecimal("1.01")));
System.out.println("Transaction completed successfully.");
ReturnMenu();
}
case 3 -> {
System.out.print("Enter the amount to withdraw cash: ");
BigDecimal sum = scan.nextBigDecimal();
CheckSum(sum);
check = check.subtract(sum.multiply(new BigDecimal("1.01")));
System.out.println("Done.");
ReturnMenu();
}
case 4 -> {
System.out.print("Balance replenishment amount: ");
BigDecimal sum = scan.nextBigDecimal();
check = check.add(sum);
System.out.println("Done.");
ReturnMenu();
}
case 5 -> {
System.out.println("Take your card");
System.exit(0);
}
default -> {
System.out.println("Error");
Interaction();
}
}
}

private static void Checking() throws ParserConfigurationException, SAXException {

DataProcessing dataProcessing = new DataProcessing();
dataProcessing.parseXMLserver();
int cardNumberServer = dataProcessing.getCARD_NUMBER();
Integer pinCodeServer = dataProcessing.getPIN();
CheckProcessing checkProcessingBank = new CheckProcessing();
checkProcessingBank.parseXMLbank();
int cardNumberBank = checkProcessingBank.getCARD_NUMBER();
if (Objects.equals(cardNumberBank, cardNumberServer)) {
if (Objects.equals(cardnumber, cardNumberServer)) {
System.out.print("Please, enter your PIN code: ");
int pinCode = scan.nextInt();
String buff = Integer.toString(pinCode);
if (buff.length() == 4) {
if (Objects.equals(pinCode, pinCodeServer)) {
CheckProcessing checks = new CheckProcessing();
checks.parseXMLbank();
check = checks.getCHECK();
Interaction();
} else {
System.out.println("PIN code is incorrect");
}
} else {
System.out.println("You entered the wrong pin code.");
Checking();
}
} else {
System.out.println("Card number not found.");
}
} else {
System.out.println("Error, contact the bank support service.");
}
}

public static void main(String[] args) throws ParserConfigurationException, SAXException {

if (BankService.turning = true) {
System.out.print("Enter your card number: ");
cardnumber = scan.nextInt();
String buff = Integer.toString(cardnumber);
if (buff.length() == 8) {
Checking();
} else {
System.out.println("You entered the wrong card number.");
}
} else {
System.out.println("ATM is temporarily out of service");
}
}
}

package Bank;

import Server.BankDataProcessing;
import Server.CheckProcessing;
import Server.DataProcessing;
import org.xml.sax.SAXException;

import javax.xml.parsers.ParserConfigurationException;

import java.math.BigDecimal;
import java.text.MessageFormat;
import java.util.Objects;
import java.util.Scanner;

public class BankService {

private static final Scanner scan = new Scanner(System.in);
private static BigDecimal check;
public static Boolean turning = true;
private static String name;
private static String surName;
private static int cardNumberServer;

private static void checkSum(BigDecimal sum) {

if (check != null && check.compareTo(sum) < 0) {
System.out.println("Insufficient funds in the account.");
}
}

private static void bankService() throws ParserConfigurationException, SAXException {

System.out.println("""
Select service:
1. - Replenish the balance
2. - Withdraw cash (1%)
3. - Create an account
4. - To change the data
5. - Disable all ATMs (root)
6. - Get bank card details
7. - Cancellation of operations
""");
System.out.print("Select: ");
int i = scan.nextInt();
switch (i) {
case 1 -> {
System.out.print("Balance replenishment amount: ");
BigDecimal sum = scan.nextBigDecimal();
check = check.add(sum);
System.out.println("Done.");
}
case 2 -> {
System.out.print("Enter the amount to withdraw cash: ");
BigDecimal sum = scan.nextBigDecimal();
checkSum(sum);
check = check.subtract(sum.multiply(new BigDecimal("1.01")));
System.out.println("Done.");
}
case 3 -> {
//создание счёта
}
case 4 -> {
//изменить данные
}
case 5 -> {
System.out.println("Enter password for root access: ");
int root = scan.nextInt();
BankDataProcessing bankDataProcessing = new BankDataProcessing();
bankDataProcessing.parseXMLbank();
int rootServer = bankDataProcessing.getRoot();
if (Objects.equals(root, rootServer)) {
turning = false;
bankService();
} else {
System.out.println("You entered the wrong root password.");
}
}
case 6 -> {
BankDataProcessing bankDataProcessing = new BankDataProcessing();
bankDataProcessing.parseXMLbank();
String bankName = bankDataProcessing.getName();
String bankInn = bankDataProcessing.getInn();
System.out.println(MessageFormat.format("Name: {0}\nSurname: {1}\nCard number: {2}\nBank name: {3}\nBank INN: {4}", name, surName, cardNumberServer, bankName, bankInn));
}
case 7 -> {
System.out.println("Take your card");
System.exit(0);
}
default -> {
System.out.println("Error");
bankService();
}
}
}

private static void bankCheck() throws ParserConfigurationException, SAXException {

DataProcessing dataProcessing = new DataProcessing();
dataProcessing.parseXMLserver();
cardNumberServer = dataProcessing.getCARD_NUMBER();
Integer pinCodeServer = dataProcessing.getPIN();
CheckProcessing checkProcessingBank = new CheckProcessing();
checkProcessingBank.parseXMLbank();
int cardNumberBank = checkProcessingBank.getCARD_NUMBER();
if (Objects.equals(cardNumberBank, cardNumberServer)) {
name = DataProcessing.getNAME();
surName = DataProcessing.getSurName();
if (Objects.equals(cardNumberBank, cardNumberServer)) {
System.out.print("Enter PIN code: ");
int pinCode = scan.nextInt();
String buff = Integer.toString(pinCode);
if (buff.length() == 4) {
if (Objects.equals(pinCode, pinCodeServer)) {
CheckProcessing checks = new CheckProcessing();
checks.parseXMLbank();
check = checks.getCHECK();
bankService();
}
}
}
} else {
System.out.println("Error, contact the bank support service.");
}
}

public static void main(String[] args) throws ParserConfigurationException, SAXException {

System.out.print("Enter card number: ");
int cardNumberBank = scan.nextInt();
String buff = Integer.toString(cardNumberBank);
if (buff.length() == 8) {
bankCheck();
} else {
System.out.println("You entered the wrong card number.");
}
}
}

package Server;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

public class DataProcessing extends DefaultHandler {

private String elementName;
private int CARD_NUMBER;
public int getCARD_NUMBER() {
return CARD_NUMBER;
}
private int PIN;
public int getPIN() {
return PIN;
}
private static String NAME;
public static String getNAME() {
return NAME;
}
protected static String SUR_NAME;
public static String getSurName()
{
return SUR_NAME;
}

public void parseXMLserver() throws ParserConfigurationException, SAXException {

String filePath = "C:\\Project\\Java\\ATM_SYSTEM\\src\\Bank\\Clients.xml";
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
try (InputStream xmlInput = new FileInputStream(filePath)) {
parser.parse(xmlInput, this);
} catch (IOException e) {
e.printStackTrace();
}
}

@Override

public void startElement(String uri, String localName, String qName, Attributes attributes) {
elementName = qName;
}

@Override

public void endElement(String uri, String localName, String qName) {
elementName = "";
}
@Override
public void characters(char[] ch, int start, int length) {
String trim = new String(ch, start, length).trim();
switch (elementName) {
case "card_number" -> CARD_NUMBER = (int) Long.parseLong(trim);
case "pin"-> PIN = Integer.parseInt(trim);
case "name"-> NAME = String.copyValueOf(trim.toCharArray());
case "sur_name"-> SUR_NAME = String.copyValueOf(trim.toCharArray());
}
}
}
package Server;

import org.xml.sax.Attributes;

import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;

public class CheckProcessing extends DefaultHandler {

private String elementName;
private BigDecimal CHECK;
public BigDecimal getCHECK() {
return CHECK;
}
private int CARD_NUMBER;

public int getCARD_NUMBER() {

return CARD_NUMBER;
}

public void parseXMLbank() throws ParserConfigurationException, SAXException {

String filePath = "C:\\Project\\Java\\ATM_SYSTEM\\src\\Bank\\CustomerAccount.xml";
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
try (InputStream xmlInput = new FileInputStream(filePath)) {
parser.parse(xmlInput, this);
} catch (IOException e) {
e.printStackTrace();
}
}

@Override

public void startElement(String uri, String localName, String qName, Attributes attributes) {
elementName = qName;
}

@Override

public void endElement(String uri, String localName, String qName) {
elementName = "";
}

@Override

public void characters(char[] ch, int start, int length) {
String trim = new String(ch, start, length).trim();
switch (elementName) {
case "check" -> CHECK = BigDecimal.valueOf(Double.parseDouble(trim));
case "card_number" -> CARD_NUMBER = Integer.parseInt(trim);
}
}
}
package Server;

import org.xml.sax.Attributes;

import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

public class BankDataProcessing extends DefaultHandler {

private String elementName;
private String name;

public String getName() {

return name;
}
private String inn;

public String getInn() {

return inn;
}
private int root;

public int getRoot() {

return root;
}
public void parseXMLbank() throws ParserConfigurationException, SAXException {
String filePath = "C:\\Project\\Java\\ATM_SYSTEM\\src\\Bank\\Data_Bank.xml";
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
try (InputStream xmlInput = new FileInputStream(filePath)) {
parser.parse(xmlInput, this);
} catch (IOException e) {
e.printStackTrace();
}
}

@Override

public void startElement(String uri, String localName, String qName, Attributes attributes) {
elementName = qName;
}

@Override

public void endElement(String uri, String localName, String qName) {
elementName = "";
}

@Override

public void characters(char[] ch, int start, int length) {
String trim = new String(ch, start, length).trim();
switch (elementName) {
case "name" -> name = String.copyValueOf(trim.toCharArray());
case "inn" -> inn = String.copyValueOf(trim.toCharArray());
case "root" -> root = Integer.parseInt(trim);
}
}
}

ОТЧЁТЫ

Вводим номер карты и ПИН-код, открывается меню операций. Нам нужно снять наличные и посмотреть баланс.