diff --git a/src/main/java/Rational/Rational.java b/src/main/java/Rational/Rational.java index 7bd840e..b030f73 100644 --- a/src/main/java/Rational/Rational.java +++ b/src/main/java/Rational/Rational.java @@ -1,12 +1,15 @@ package Rational; -public class Rational { +public class Rational +{ private int numerator; private int denominator; // Constructor - public Rational(int numerator, int denominator) { - if (denominator == 0) { + public Rational(int numerator, int denominator) + { + if (denominator == 0) + { throw new IllegalArgumentException("Denominator cannot be zero"); } this.numerator = numerator; @@ -15,10 +18,12 @@ public class Rational { } // GCD helper for simplification - private int gcd(int a, int b) { + private int gcd(int a, int b) + { a = Math.abs(a); b = Math.abs(b); - while (b != 0) { + while (b != 0) + { int temp = b; b = a % b; a = temp; @@ -27,82 +32,95 @@ public class Rational { } // Simplify the fraction - private void simplify() { + private void simplify() + { int gcd = gcd(numerator, denominator); numerator /= gcd; denominator /= gcd; // Keep denominator positive - if (denominator < 0) { + if (denominator < 0) + { numerator = -numerator; denominator = -denominator; } } - // COMPLETED - Instance method: this + other - public Rational add(Rational other) { + // Instance method: this + other + public Rational add(Rational other) + { int newNumerator = this.numerator * other.denominator + other.numerator * this.denominator; int newDenominator = this.denominator * other.denominator; return new Rational(newNumerator, newDenominator); } - // COMPLETED - Static method: r1 + r2 - public static Rational add(Rational r1, Rational r2) { + // Static method: r1 + r2 + public static Rational add(Rational r1, Rational r2) + { return r1.add(r2); } - // 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 + // Instance method - this - other + 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 + // Static method - r1 - r2 + 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 + // Instance method - this * other + 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 + // Static method - r1 * r2 + public static Rational multiply(Rational r1, Rational r2) + { + return r1.multiply(r2); } - // TODO: Instance method - this / other + // 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("Division by zero rational number."); + } + 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 + // Static method - r1 / r2 + public static Rational divide(Rational r1, Rational r2) + { + return r1.divide(r2); } - // PROVIDED - String representation + // String representation @Override - public String toString() { - if (denominator == 1) { + public String toString() + { + if (denominator == 1) + { return numerator + ""; } return numerator + "/" + denominator; } - // PROVIDED - Decimal value - public double toDouble() { + // Decimal value + public double toDouble() + { return (double) numerator / denominator; } -} +} \ No newline at end of file diff --git a/src/main/java/movie/apis/Main.java b/src/main/java/movie/apis/Main.java index f0e713d..9f5188f 100644 --- a/src/main/java/movie/apis/Main.java +++ b/src/main/java/movie/apis/Main.java @@ -15,37 +15,36 @@ public class Main { 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; case 0: running = false; System.out.println("Goodbye!"); - break; default: - System.out.println("Invalid choice! Please enter 0-4"); + System.out.println("Invalid choice! Please enter 0–3"); } - if (running) { + if (running) + { System.out.println("\nPress Enter to continue..."); scanner.nextLine(); - scanner.nextLine(); } } @@ -70,7 +69,7 @@ public class Main { scanner.next(); } int input = scanner.nextInt(); - scanner.nextLine(); + scanner.nextLine(); // consume newline return input; } @@ -81,7 +80,7 @@ public class Main { scanner.next(); } Long input = scanner.nextLong(); - scanner.nextLine(); + scanner.nextLine(); // consume newline return input; } } \ No newline at end of file diff --git a/src/main/java/movie/apis/Movie.java b/src/main/java/movie/apis/Movie.java index 969774a..e28132b 100644 --- a/src/main/java/movie/apis/Movie.java +++ b/src/main/java/movie/apis/Movie.java @@ -2,12 +2,8 @@ package movie.apis; import java.util.List; -/** - * Model class representing a movie - * Fields: id, title, genres, images - */ -public class Movie { - +public class Movie +{ private Long id; private String title; private List genres; @@ -16,9 +12,187 @@ public class Movie { private String imdb_rating; private String country; - // TODO: Create a constructor with all fields + private String imdb_votes; + private String director; + private List actors; + private String runtime; + private String rated; + private String released; + private String plot; + private String awards; - // TODO: Create a simple constructor with id and title only + // Constructor with all fields + public Movie(Long id, String title, List genres, List 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; + } - // TODO: Create getters and setters for all fields + // Simple constructor with id and title only + public Movie(Long id, String title) + { + this.id = id; + this.title = title; + this.genres = null; + this.images = null; + this.year = null; + this.imdb_rating = null; + this.country = null; + } + + // Getters and setters for all fields + 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 getGenres() + { + return genres; + } + + public void setGenres(List genres) + { + this.genres = genres; + } + + public List getImages() + { + return images; + } + + public void setImages(List 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; + } + + public String getImdb_votes() + { + return imdb_votes; + } + + public void setImdb_votes(String imdb_votes) + { + this.imdb_votes = imdb_votes; + } + + public String getDirector() + { + return director; + } + + public void setDirector(String director) + { + this.director = director; + } + + public List getActors() + { + return actors; + } + + public void setActors(List actors) + { + this.actors = actors; + } + + public String getRuntime() + { + return runtime; + } + + public void setRuntime(String runtime) + { + this.runtime = runtime; + } + + public String getRated() + { + return rated; + } + + public void setRated(String rated) + { + this.rated = rated; + } + + public String getReleased() + { + return released; + } + + public void setReleased(String released) + { + this.released = released; + } + + public String getPlot() + { + return plot; + } + + public void setPlot(String plot) + { + this.plot = plot; + } + + public String getAwards() + { + return awards; + } + + public void setAwards(String awards) + { + this.awards = awards; + } } \ No newline at end of file diff --git a/src/main/java/movie/apis/MovieService.java b/src/main/java/movie/apis/MovieService.java index 3f053f5..8f042b4 100644 --- a/src/main/java/movie/apis/MovieService.java +++ b/src/main/java/movie/apis/MovieService.java @@ -12,7 +12,8 @@ import java.lang.reflect.Type; import java.util.ArrayList; import java.util.List; -public class MovieService { +public class MovieService +{ private final static String GENRES_URL = "https://api.meshcomp.ir/api/v1/genres"; private final static String MOVIE_BY_ID_URL = "https://api.meshcomp.ir/api/v1/movies/"; @@ -60,8 +61,6 @@ public class MovieService { return null; } - - public void displayGenres() { String jsonResponse = getGenresList(); @@ -87,105 +86,112 @@ public class MovieService { } } - /** - * TODO 1: Display movies for a specific genre and page - * - * Open this link in your browser (and check Pretty-print checkbox) to view json format: - * https://api.meshcomp.ir/api/v1/genres/1/movies - * - * Steps: - * - Call getMoviesByGenreList(genreId, page) to get JSON - * - Parse JSON to JsonObject - * - Get "movies" array (NOT "data") - * - Loop through array and print: "ID: {id} | {title} ({year})" - * - Also print total and total_pages - * - * 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 - } catch (Exception e) { + public void displayMoviesByGenre(Long genreId, Long page) + { + try + { + String jsonResponse = getMoviesByGenreList(genreId, page); + + if (jsonResponse == null) + { + System.out.println("Failed to get movies for genre ID: " + genreId + ", page: " + page); + return; + } + + JsonObject rootObject = JsonParser.parseString(jsonResponse).getAsJsonObject(); + + JsonArray moviesArray = rootObject.getAsJsonArray("movies"); + int total = rootObject.get("total").getAsInt(); + int totalPages = rootObject.get("total_pages").getAsInt(); + + System.out.println("\nMOVIES (Genre ID: " + genreId + ", Page: " + page + ")"); + for (JsonElement element : moviesArray) + { + JsonObject movieObject = element.getAsJsonObject(); + Long id = movieObject.get("id").getAsLong(); + String title = movieObject.get("title").getAsString(); + String year = movieObject.get("year").getAsString(); + System.out.println("ID: " + id + " | " + title + " (" + year + ")"); + } + + System.out.println("Total: " + total + " | Total Pages: " + totalPages); + System.out.println(); + + } + catch (Exception e) + { System.err.println("ERROR: " + e.getMessage()); } } + private String getMovieById(Long movieId) + { + try + { + String url = MOVIE_BY_ID_URL + movieId; - /** - * 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 response = client.send(request, HttpResponse.BodyHandlers.ofString()); - // if (response.statusCode() == 200) return response.body(); + HttpRequest request = HttpRequest.newBuilder() + .uri(URI.create(url)) + .build(); - return null; - } catch (Exception e) { + HttpResponse 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 - - Open this link in your browser (and check Pretty-print checkbox) to view json format: - https://api.meshcomp.ir/api/v1/movies/1 - - INSTRUCTIONS: - 1. Call getMovieById(movieId) to get the JSON response string - 2. Check if response is null (if yes, print error and return) - 3. Parse the JSON string to JsonObject (inside try-catch) - 4. Use Gson to extract all fields from the JSON and map them to your Movie class: - - Add missing JSON fields to your Movie class first (actors, awards, director, - imdb_id, imdb_votes, metascore, plot, rated, released, runtime, type, writer) - - Then use Gson to parse your json string - 5. Print all movie details in a readable format - - (PUT ALL PARSING CODE INSIDE THE EXISTING try-catch) - */ - - /* EXAMPLE OUTPUT: - - ======================================================================= - THE SHAWSHANK REDEMPTION (1994) - ======================================================================= - Rating: 9.3/10 | Votes: 1,738,596 - Director: Frank Darabont - Cast: Tim Robbins, Morgan Freeman, Bob Gunton, William Sadler - Genre: Crime, Drama - Runtime: 142 min | Rated: R - Country: USA | Released: 14 Oct 1994 - Plot: Two imprisoned men bond over a number of years, finding - solace and eventual redemption through acts of common decency. - Awards: Nominated for 7 Oscars. Another 19 wins & 30 nominations. - ======================================================================= - - */ - - 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 rootObject = JsonParser.parseString(jsonResponse).getAsJsonObject(); + + Gson gson = new Gson(); + Movie movie = gson.fromJson(rootObject, Movie.class); + + System.out.println("======================================================================"); + System.out.println(" " + movie.getTitle() + " (" + movie.getYear() + ")"); + System.out.println("======================================================================"); + System.out.println("Rating: " + movie.getImdb_rating() + "/10 | Votes: " + movie.getImdb_votes()); + System.out.println("Director: " + movie.getDirector()); + + String cast = (movie.getActors() != null) ? String.join(", ", movie.getActors()) : ""; + System.out.println("Cast: " + cast); + + String genresText = (movie.getGenres() != null) ? String.join(", ", movie.getGenres()) : ""; + System.out.println("Genre: " + genresText); + + System.out.println("Runtime: " + movie.getRuntime() + " | Rated: " + movie.getRated()); + System.out.println("Country: " + movie.getCountry() + " | Released: " + movie.getReleased()); + System.out.println("Plot: " + movie.getPlot()); + System.out.println("Awards: " + movie.getAwards()); + System.out.println("======================================================================"); + + } + catch (Exception e) + { System.err.println("ERROR parsing movie details: " + e.getMessage()); } }