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Trabalho

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250421
2026-06-08 09:05:54 +01:00
commit aa1ea154b0
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pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany</groupId>
<artifactId>ProjectCarsCheckIn</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.release>24</maven.compiler.release>
<exec.mainClass>com.mycompany.projectcarscheckin.ProjectCarsCheckIn</exec.mainClass>
</properties>
</project>

391
src/main/java/com/mycompany/projectcarscheckin/ProjectCarsCheckIn.java Normal file
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/*
* Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
*/
package com.mycompany.projectcarscheckin;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;
public class ProjectCarsCheckIn {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
while (true) {
System.out.println("\n========== APPAREL OF VEHICLES IN THE VEHICLE FLEET ==========");
System.out.println("1 - Add a new car");
System.out.println("2 - Show all cars");
System.out.println("3 - Searching for a car's license plate");
System.out.println("4 - Check the reminding about maintenance");
System.out.println("5 - Remove vehicle");
System.out.println("6 - Exit");
System.out.print("Choose an option: ");
int option = scanner.nextInt();
scanner.nextLine();
switch (option) {
case 1 -> addNewVehicle();
case 2 -> showAllVehicles();
case 3 -> searchCarByLicensePlate();
case 4 -> checkMaintenanceTO();
case 5 -> removeVehicle();
case 6 -> {
System.out.println("Bye!");
return;
}
default -> System.out.println("Option is invalid!");
}
}
}
// ==================== VEHICLE CLASS ====================
private static class Vehicle {
String brand;
String model;
String year;
String licensePlate;
String mileage;
String lastMaintenanceDate;
Vehicle(String brand, String model, String year, String licensePlate, String mileage, String lastMaintenanceDate) {
this.brand = brand;
this.model = model;
this.year = year;
this.licensePlate = licensePlate;
this.mileage = mileage;
this.lastMaintenanceDate = lastMaintenanceDate;
}
String toCSV() {
return brand + "," + model + "," + year + "," + licensePlate + "," + mileage + "," + lastMaintenanceDate;
}
}
// ==================== ADD NEW VEHICLE ====================
private static void addNewVehicle() {
Scanner scanner = new Scanner(System.in);
System.out.println("\n========== ADD NEW VEHICLE ==========");
System.out.print("Enter brand: ");
String brand = scanner.nextLine();
System.out.print("Enter model: ");
String model = scanner.nextLine();
System.out.print("Enter year: ");
String year = scanner.nextLine();
System.out.print("Enter license plate: ");
String licensePlate = scanner.nextLine().toUpperCase();
System.out.print("Enter mileage (km): ");
String mileage = scanner.nextLine();
System.out.print("Enter last maintenance date (DD.MM.YYYY): ");
String lastMaintenanceDate = scanner.nextLine();
Vehicle newVehicle = new Vehicle(brand, model, year, licensePlate, mileage, lastMaintenanceDate);
addTextToFile(newVehicle.toCSV() + "\n", "vehicles.txt");
System.out.println("\n Vehicle successfully added!");
}
// ==================== SHOW ALL VEHICLES ====================
private static void showAllVehicles() {
String fileName = "vehicles.txt";
int numLines = getNumberOfLinesInFile(fileName);
if (numLines == 0) {
System.out.println("The fleet is empty!");
return;
}
String[] brand = new String[numLines];
String[] model = new String[numLines];
String[] year = new String[numLines];
String[] licensePlate = new String[numLines];
String[] mileage = new String[numLines];
String[] lastMaintenanceDate = new String[numLines];
readAllVehicles(fileName, brand, model, year, licensePlate, mileage, lastMaintenanceDate);
System.out.println("\n================== ALL VEHICLES IN THE FLEET ==================");
for (int i = 0; i < brand.length; i++) {
System.out.println("Vehicle #" + (i + 1));
System.out.println(" Brand: " + brand[i]);
System.out.println(" Model: " + model[i]);
System.out.println(" Year: " + year[i]);
System.out.println(" License plate: " + licensePlate[i]);
System.out.println(" Mileage: " + mileage[i] + " km");
System.out.println(" Last maintenance date: " + lastMaintenanceDate[i]);
System.out.println("------------------------------------------------");
}
}
// ==================== SEARCH BY LICENSE PLATE ====================
private static void searchCarByLicensePlate() {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter license plate to search: ");
String searchPlate = scanner.nextLine().toUpperCase();
String fileName = "vehicles.txt";
int numLines = getNumberOfLinesInFile(fileName);
if (numLines == 0) {
System.out.println("The fleet is empty!");
return;
}
String[] brand = new String[numLines];
String[] model = new String[numLines];
String[] year = new String[numLines];
String[] licensePlate = new String[numLines];
String[] mileage = new String[numLines];
String[] lastMaintenanceDate = new String[numLines];
readAllVehicles(fileName, brand, model, year, licensePlate, mileage, lastMaintenanceDate);
boolean found = false;
for (int i = 0; i < licensePlate.length; i++) {
if (licensePlate[i].equalsIgnoreCase(searchPlate)) {
System.out.println("\n========== VEHICLE FOUND ==========");
System.out.println(" Brand: " + brand[i]);
System.out.println(" Model: " + model[i]);
System.out.println(" Year: " + year[i]);
System.out.println(" License plate: " + licensePlate[i]);
System.out.println(" Mileage: " + mileage[i] + " km");
System.out.println(" Last maintenance date: " + lastMaintenanceDate[i]);
System.out.println("=====================================");
found = true;
break;
}
}
if (!found) {
System.out.println("Vehicle with license plate " + searchPlate + " not found!");
}
}
// ==================== MAINTENANCE REMINDER ====================
private static void checkMaintenanceTO() {
String fileName = "vehicles.txt";
int numLines = getNumberOfLinesInFile(fileName);
if (numLines == 0) {
System.out.println("The fleet is empty!");
return;
}
String[] brand = new String[numLines];
String[] model = new String[numLines];
String[] year = new String[numLines];
String[] licensePlate = new String[numLines];
String[] mileage = new String[numLines];
String[] lastMaintenanceDate = new String[numLines];
readAllVehicles(fileName, brand, model, year, licensePlate, mileage, lastMaintenanceDate);
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd.MM.yyyy");
LocalDate today = LocalDate.now();
System.out.println("\n========== MAINTENANCE REMINDER ==========");
boolean hasAlert = false;
for (int i = 0; i < brand.length; i++) {
boolean needsMaintenance = false;
String reason = "";
try {
LocalDate lastMaintenance = LocalDate.parse(lastMaintenanceDate[i], formatter);
long monthsSinceMaintenance = ChronoUnit.MONTHS.between(lastMaintenance, today);
if (monthsSinceMaintenance >= 6) {
needsMaintenance = true;
reason = monthsSinceMaintenance + " months passed (need every 6 months)";
}
} catch (Exception e) {
// Skip date errors
}
long currentMileage = Long.parseLong(mileage[i]);
if (currentMileage > 15000) {
needsMaintenance = true;
reason += (reason.isEmpty() ? "" : " and ") + "mileage " + currentMileage + " km (recommended every 15000 km)";
}
if (needsMaintenance) {
System.out.println("⚠️ Vehicle: " + brand[i] + " " + model[i]);
System.out.println(" License plate: " + licensePlate[i]);
System.out.println(" Mileage: " + mileage[i] + " km");
System.out.println(" Last maintenance date: " + lastMaintenanceDate[i]);
System.out.println(" Reason: " + reason);
System.out.println(" ➤ Maintenance recommended!");
System.out.println("-----------------------------------");
hasAlert = true;
}
}
if (!hasAlert) {
System.out.println("All vehicles are in good condition, no maintenance needed!");
}
}
// ==================== REMOVE VEHICLE ====================
private static void removeVehicle() {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter license plate of vehicle to remove: ");
String plateToRemove = scanner.nextLine().toUpperCase();
String fileName = "vehicles.txt";
int numLines = getNumberOfLinesInFile(fileName);
if (numLines == 0) {
System.out.println("The fleet is empty!");
return;
}
String[] brand = new String[numLines];
String[] model = new String[numLines];
String[] year = new String[numLines];
String[] licensePlate = new String[numLines];
String[] mileage = new String[numLines];
String[] lastMaintenanceDate = new String[numLines];
readAllVehicles(fileName, brand, model, year, licensePlate, mileage, lastMaintenanceDate);
StringBuilder newContent = new StringBuilder();
boolean removed = false;
for (int i = 0; i < licensePlate.length; i++) {
if (licensePlate[i].equalsIgnoreCase(plateToRemove)) {
removed = true;
System.out.println("Removed: " + brand[i] + " " + model[i] + " (" + licensePlate[i] + ")");
} else {
newContent.append(brand[i]).append(",")
.append(model[i]).append(",")
.append(year[i]).append(",")
.append(licensePlate[i]).append(",")
.append(mileage[i]).append(",")
.append(lastMaintenanceDate[i]).append("\n");
}
}
if (removed) {
writeToFile(newContent.toString(), fileName);
System.out.println(" Vehicle removed successfully!");
} else {
System.out.println("Vehicle with license plate " + plateToRemove + " not found!");
}
}
// ==================== FILE OPERATION METHODS ====================
private static void writeToFile(String text, String fileName) {
try (FileWriter fileWriter = new FileWriter(new File(fileName))) {
BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
bufferedWriter.write(text);
bufferedWriter.close();
} catch (IOException ex) {
Logger.getLogger(ProjectCarsCheckIn.class.getName()).log(Level.SEVERE, null, ex);
}
}
private static String readFile(String fileName) {
StringBuilder textRead = new StringBuilder();
try (FileReader fileReader = new FileReader(new File(fileName));
BufferedReader bufferedReader = new BufferedReader(fileReader)) {
String line;
while ((line = bufferedReader.readLine()) != null) {
textRead.append(line).append("\n");
}
} catch (FileNotFoundException ex) {
writeToFile("", fileName);
} catch (IOException ex) {
Logger.getLogger(ProjectCarsCheckIn.class.getName()).log(Level.SEVERE, null, ex);
}
return textRead.toString();
}
private static void addTextToFile(String text, String fileName) {
String oldText = readFile(fileName);
String newText = oldText + text;
writeToFile(newText, fileName);
}
private static int getNumberOfLinesInFile(String fileName) {
int numberOfLines = 0;
try (FileReader fileReader = new FileReader(new File(fileName));
BufferedReader bufferedReader = new BufferedReader(fileReader)) {
while (bufferedReader.readLine() != null) {
numberOfLines++;
}
} catch (FileNotFoundException ex) {
writeToFile("", fileName);
} catch (IOException ex) {
Logger.getLogger(ProjectCarsCheckIn.class.getName()).log(Level.SEVERE, null, ex);
}
return numberOfLines;
}
private static void readAllVehicles(String fileName, String[] brand, String[] model,
String[] year, String[] licensePlate,
String[] mileage, String[] lastMaintenanceDate) {
try (FileReader fileReader = new FileReader(new File(fileName));
BufferedReader bufferedReader = new BufferedReader(fileReader)) {
String line;
int i = 0;
while ((line = bufferedReader.readLine()) != null && i < brand.length) {
extractDataFromCSV(brand, model, year, licensePlate, mileage, lastMaintenanceDate, i, line);
i++;
}
} catch (FileNotFoundException ex) {
writeToFile("", fileName);
} catch (IOException ex) {
Logger.getLogger(ProjectCarsCheckIn.class.getName()).log(Level.SEVERE, null, ex);
}
}
private static void extractDataFromCSV(String[] brand, String[] model, String[] year,
String[] licensePlate, String[] mileage,
String[] lastMaintenanceDate,
int lineIndex, String line) {
int lastCommaPosition = -1;
int fieldCount = 0;
for (int i = 0; i < line.length(); i++) {
if (line.charAt(i) == ',') {
String field = line.substring(lastCommaPosition + 1, i);
switch (fieldCount) {
case 0 -> brand[lineIndex] = field;
case 1 -> model[lineIndex] = field;
case 2 -> year[lineIndex] = field;
case 3 -> licensePlate[lineIndex] = field;
case 4 -> mileage[lineIndex] = field;
}
lastCommaPosition = i;
fieldCount++;
}
}
lastMaintenanceDate[lineIndex] = line.substring(lastCommaPosition + 1);
}
}

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vehicles.txt Normal file
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Toyota,M3,2013,12345,23400,14.05.2016