Saba_frm/HW-03-oop-and-api
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Saba_frm
2026-04-30 12:18:24 +03:30
parent 6a01e43eb2
commit 6d9a1603a2
5 changed files with 226 additions and 54 deletions
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.idea/misc.xml
Generated
+1 -3
View File
@@ -8,7 +8,5 @@
</list>
</option>
</component>
<component name="ProjectRootManager" version="2" languageLevel="JDK_25" project-jdk-name="25" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/out" />
</component>
<component name="ProjectRootManager" version="2" project-jdk-name="21" project-jdk-type="JavaSDK" />
</project>
src/main/java/Rational/Rational.java
+29 -20
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@@ -53,43 +53,52 @@ public class Rational {
// TODO: Instance method - this - other
// Formula: a/b - c/d = (a*d - c*b) / (b*d)
public Rational subtract(Rational other) {
// YOUR CODE HERE
return null; // Remove this line when implemented
public Rational subtract(Rational other)
{
int newNumerator = this.numerator * other.denominator - other.numerator * this.denominator;
int newDenominator = this.denominator * other.denominator;
return new Rational(newNumerator, newDenominator);
}
// TODO: Static method - r1 - r2
public static Rational subtract(Rational r1, Rational r2) {
// YOUR CODE HERE
return null; // Remove this line when implemented
public static Rational subtract(Rational r1, Rational r2)
{
return r1.subtract(r2);
}
// TODO: Instance method - this * other
// Formula: (a/b) * (c/d) = (a*c) / (b*d)
public Rational multiply(Rational other) {
// YOUR CODE HERE
return null; // Remove this line when implemented
public Rational multiply(Rational other)
{
int newNumerator = this.numerator * other.numerator;
int newDenominator = this.denominator * other.denominator;
return new Rational(newNumerator, newDenominator);
}
// TODO: Static method - r1 * r2
public static Rational multiply(Rational r1, Rational r2) {
// YOUR CODE HERE
return null; // Remove this line when implemented
public static Rational multiply(Rational r1, Rational r2)
{
return r1.multiply(r2);
}
// TODO: Instance method - this / other
// Formula: (a/b) ÷ (c/d) = (a*d) / (b*c)
public Rational divide(Rational other) {
// YOUR CODE HERE
// HINT: Division is multiplication by reciprocal
// Don't forget to check if other.numerator is zero!
return null; // Remove this line when implemented
public Rational divide(Rational other)
{
if (other.numerator == 0)
{
throw new ArithmeticException("Cannot divide by zero");
}
int newNumerator = this.numerator * other.denominator;
int newDenominator = this.denominator * other.numerator;
return new Rational(newNumerator, newDenominator);
}
// TODO: Static method - r1 / r2
public static Rational divide(Rational r1, Rational r2) {
// YOUR CODE HERE
return null; // Remove this line when implemented
public static Rational divide(Rational r1, Rational r2)
{
return r1.divide(r2);
}
// PROVIDED - String representation
src/main/java/movie/apis/Main.java
+19 -8
View File
@@ -7,28 +7,35 @@ public class Main {
private static final MovieService movieService = new MovieService();
private static final Scanner scanner = new Scanner(System.in);
public static void main(String[] args) {
public static void main(String[] args)
{
System.out.println("\n=== MOVIE API CLIENT ===\n");
boolean running = true;
while (running) {
while (running)
{
displayMenu();
int choice = getIntInput("Enter your choice: ");
switch (choice) {
switch (choice)
{
case 1:
movieService.displayGenres();
break;
case 2:
// TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
Long genreId = getLongInput("Enter genre ID: ");
Long page = getLongInput("Enter page number: ");
movieService.displayMoviesByGenre(genreId, page);
break;
case 3:
// TODO (BONUS): Get movie ID from user, then call movieService.displayMovieDetails()
Long movieId = getLongInput("Enter movie ID: ");
movieService.displayMovieDetails(movieId);
break;
@@ -42,7 +49,8 @@ public class Main {
System.out.println("Invalid choice! Please enter 0-4");
}
if (running) {
if (running)
{
System.out.println("\nPress Enter to continue...");
scanner.nextLine();
scanner.nextLine();
@@ -65,7 +73,8 @@ public class Main {
private static int getIntInput(String prompt) {
System.out.print(prompt);
while (!scanner.hasNextInt()) {
while (!scanner.hasNextInt())
{
System.out.print("Invalid input. " + prompt);
scanner.next();
}
@@ -74,9 +83,11 @@ public class Main {
return input;
}
private static Long getLongInput(String prompt) {
private static Long getLongInput(String prompt)
{
System.out.print(prompt);
while (!scanner.hasNextLong()) {
while (!scanner.hasNextLong())
{
System.out.print("Invalid input. " + prompt);
scanner.next();
}
src/main/java/movie/apis/Movie.java
+96 -1
View File
@@ -16,9 +16,104 @@ public class Movie {
private String imdb_rating;
private String country;
public Movie(Long id, String title, List<String> genres, List<String> images,
String year, String imdb_rating, String country)
{
this.id = id;
this.title = title;
this.genres = genres;
this.images = images;
this.year = year;
this.imdb_rating = imdb_rating;
this.country = country;
}
public Movie(Long id, String title)
{
this.id = id;
this.title = title;
}
public Movie() {}
public Long getId()
{
return id;
}
public void setId(Long id)
{
this.id = id;
}
public String getTitle()
{
return title;
}
public void setTitle(String title)
{
this.title = title;
}
public List<String> getGenres()
{
return genres;
}
public void setGenres(List<String> genres)
{
this.genres = genres;
}
public List<String> getImages()
{
return images;
}
public void setImages(List<String> images)
{
this.images = images;
}
public String getYear()
{
return year;
}
public void setYear(String year)
{
this.year = year;
}
public String getImdb_rating()
{
return imdb_rating;
}
public void setImdb_rating(String imdb_rating)
{
this.imdb_rating = imdb_rating;
}
public String getCountry()
{
return country;
}
public void setCountry(String country)
{
this.country = country;
}
@Override
public String toString()
{
return title + " (" + year + ") - IMDB: " + imdb_rating;
}
}
// TODO: Create a constructor with all fields
// TODO: Create a simple constructor with id and title only
// TODO: Create getters and setters for all fields
}
src/main/java/movie/apis/MovieService.java
+81 -22
View File
@@ -102,11 +102,39 @@ public class MovieService {
*
* PUT ALL PARSING CODE INSIDE try-catch
*/
public void displayMoviesByGenre(Long genreId, Long page) {
// TODO: Write your code here
// All parsing code must be inside try-catch
try {
// Your code here
public void displayMoviesByGenre(Long genreId, Long page)
{
try
{
String json = getMoviesByGenreList(genreId, page);
if (json == null)
{
System.out.println("Failed to load movies");
return;
}
JsonObject root = JsonParser.parseString(json).getAsJsonObject();
long total = root.get("total").getAsLong();
long totalPages = root.get("total_pages").getAsLong();
JsonArray moviesArray = root.getAsJsonArray("movies");
System.out.println("\nMovies for genre " + genreId + " | Page " + page);
System.out.println("----------------------------------------------");
for (JsonElement element : moviesArray) {
JsonObject movieObj = element.getAsJsonObject();
Long id = movieObj.get("id").getAsLong();
String title = movieObj.get("title").getAsString();
String year = movieObj.get("year").getAsString();
System.out.println("ID: " + id + " | " + title + " (" + year + ")");
}
System.out.println("\nTotal Movies: " + total);
System.out.println("Total Pages: " + totalPages);
System.out.println();
} catch (Exception e) {
System.err.println("ERROR: " + e.getMessage());
@@ -114,25 +142,35 @@ public class MovieService {
}
/**
* BONUS: Fetch movie details from API using movie ID
* URL format: https://api.meshcomp.ir/api/v1/movies/{movieId}
*/
private String getMovieById(Long movieId) {
try {
// TODO: Complete this method
// String url = MOVIE_BY_ID_URL + movieId;
// HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
// HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
// if (response.statusCode() == 200) return response.body();
String url = MOVIE_BY_ID_URL + movieId;
HttpRequest request = HttpRequest.newBuilder()
.uri(URI.create(url))
.build();
HttpResponse<String> response =
client.send(request, HttpResponse.BodyHandlers.ofString());
if (response.statusCode() == 200) {
return response.body();
} else {
System.out.println("HTTP error code: " + response.statusCode());
}
return null;
} catch (Exception e) {
System.out.println("!!Exception : " + e.getMessage());
}
return null;
}
/*
BONUS TODO: Display complete movie details for a given movie ID
@@ -170,23 +208,44 @@ public class MovieService {
*/
public void displayMovieDetails(Long movieId) {
// Step 1: Get JSON response from API
public void displayMovieDetails(Long movieId)
{
String jsonResponse = getMovieById(movieId);
// Step 2: Check if we got valid data
// Step 3-5: Parse JSON and display details (PUT YOUR CODE INSIDE try-catch)
if (jsonResponse == null) {
if (jsonResponse == null)
{
System.out.println("Failed to get movie details for ID: " + movieId);
return;
}
try {
// TODO: Parse jsonResponse to JsonObject
// HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
// TODO: use Gson to parse the json
// Your code here:
} catch (Exception e) {
try
{
JsonObject root = JsonParser.parseString(jsonResponse).getAsJsonObject();
Gson gson = new Gson();
Movie movie = gson.fromJson(root, Movie.class);
System.out.println("\n=======================================================================");
System.out.println(" " + movie.getTitle() + " (" + movie.getYear() + ")");
System.out.println("=======================================================================");
System.out.println("Rating: " + movie.getImdb_rating());
System.out.println("Country: " + movie.getCountry());
System.out.println("Year: " + movie.getYear());
if (movie.getGenres() != null)
System.out.println("Genres: " + String.join(", ", movie.getGenres()));
System.out.println("\n=======================================================================");
System.out.println();
}
catch (Exception e)
{
System.err.println("ERROR parsing movie details: " + e.getMessage());
}
}
}