Assignment-3

src/main/java/Rational/Rational.java

@@ -39,57 +39,58 @@ public class Rational {
         }
     }
 
-    //  COMPLETED - 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) {
         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
+        int newNumerator = this.numerator * other.denominator - other.numerator * this.denominator;
-        return null; // Remove this line when implemented
+        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 r1.subtract(r2);
-        return null; // Remove this line when implemented
     }
 
-    // TODO: Instance method - this * other
+
-    // Formula: (a/b) * (c/d) = (a*c) / (b*d)
+
     public Rational multiply(Rational other) {
-        // YOUR CODE HERE
+        int newNumerator = this.numerator * other.numerator;
-        return null; // Remove this line when implemented
+        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 r1.multiply(r2);
-        return null; // Remove this line when implemented
     }
 
-    // TODO: Instance method - this / other
+
-    // Formula: (a/b) ÷ (c/d) = (a*d) / (b*c)
+
     public Rational divide(Rational other) {
-        // YOUR CODE HERE
+        if (other.denominator == 0) {
-        // HINT: Division is multiplication by reciprocal
+            throw new IllegalArgumentException("Denominator cannot be zero");
-        // Don't forget to check if other.numerator is zero!
+        }
-        return null; // Remove this line when implemented
+        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 r1.divide(r2);
-        return null; // Remove this line when implemented
     }
 
     //  PROVIDED - String representation

src/main/java/movie/apis/Main.java

@@ -21,15 +21,20 @@ public class Main {
                     break;
 
                 case 2:
-                    // TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
+                    System.out.print("Enter genre id: ");
-
+                    long genreId = scanner.nextLong();
+                    System.out.print("Enter page: ");
+                    long page = scanner.nextLong();
+                    scanner.nextLine();
+                    movieService.displayMoviesByGenre(genreId, page);
                     break;
 
 
                 case 3:
-                    // TODO (BONUS): Get movie ID from user, then call movieService.displayMovieDetails()
+                    System.out.print("Enter movie id: ");
-
+                    long movieId = scanner.nextLong();
-
+                    scanner.nextLine();
+                    movieService.displayMovieDetails(movieId);
                     break;
 
                 case 0:
@@ -39,13 +44,13 @@ public class Main {
                     break;
 
                 default:
-                    System.out.println("Invalid choice! Please enter 0-4");
+                    System.out.println("Invalid choice! Please enter 0-3");
             }
 
             if (running) {
                 System.out.println("\nPress Enter to continue...");
                 scanner.nextLine();
-                scanner.nextLine();
+                //scanner.nextLine();
             }
         }
 

src/main/java/movie/apis/Movie.java

@@ -15,10 +15,195 @@ public class Movie {
     private String year;
     private String imdb_rating;
     private String country;
+    private String actors;
+    private String awards;
+    private String director;
+    private String imdb_id;
+    private String imdb_votes;
+    private String metascore;
+    private String plot;
+    private String rated;
+    private String released;
+    private String runtime;
+    private String type;
+    private String writer;
 
-    // TODO: Create a constructor with all fields
+    public Movie(Long id, String title, List<String> genres, List<String> images, String year, String imdb_rating, String country, String actors, String awards, String director, String imdb_id, String imdb_votes, String metascore, String plot, String rated, String released, String runtime, String type, String writer) {
+        this.id = id;
+        this.title = title;
+        this.genres = genres;
+        this.images = images;
+        this.year = year;
+        this.imdb_rating = imdb_rating;
+        this.country = country;
+        this.actors = actors;
+        this.awards = awards;
+        this.director = director;
+        this.imdb_id = imdb_id;
+        this.imdb_votes = imdb_votes;
+        this.metascore = metascore;
+        this.plot = plot;
+        this.rated = rated;
+        this.released = released;
+        this.runtime = runtime;
+        this.type = type;
+        this.writer = writer;
+    }
 
-    // TODO: Create a simple constructor with id and title only
+    public Movie(Long id, String title) {
+        this.id = id;
+        this.title = title;
+    }
 
-    // TODO: Create 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<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;
+    }
+
+    public String getActors() {
+        return actors;
+    }
+
+    public void setActors(String actors) {
+        this.actors = actors;
+    }
+
+    public String getAwards() {
+        return awards;
+    }
+
+    public void setAwards(String awards) {
+        this.awards = awards;
+    }
+
+    public String getDirector() {
+        return director;
+    }
+
+    public void setDirector(String director) {
+        this.director = director;
+    }
+
+    public String getImdb_id() {
+        return imdb_id;
+    }
+
+    public void setImdb_id(String imdb_id) {
+        this.imdb_id = imdb_id;
+    }
+
+    public String getImdb_votes() {
+        return imdb_votes;
+    }
+
+    public void setImdb_votes(String imdb_votes) {
+        this.imdb_votes = imdb_votes;
+    }
+
+    public String getMetascore() {
+        return metascore;
+    }
+
+    public void setMetascore(String metascore) {
+        this.metascore = metascore;
+    }
+
+    public String getPlot() {
+        return plot;
+    }
+
+    public void setPlot(String plot) {
+        this.plot = plot;
+    }
+
+    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 getRuntime() {
+        return runtime;
+    }
+
+    public void setRuntime(String runtime) {
+        this.runtime = runtime;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public String getWriter() {
+        return writer;
+    }
+
+    public void setWriter(String writer) {
+        this.writer = writer;
+    }
 }

src/main/java/movie/apis/MovieService.java

@@ -87,26 +87,28 @@ 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
+            String jsonResponse = getMoviesByGenreList(genreId, page);
+            if (jsonResponse == null) {return;}
+
+            JsonObject rootObject = JsonParser.parseString(jsonResponse).getAsJsonObject();
+
+            JsonArray moviesArray = rootObject.getAsJsonArray("movies");
+
+            if (moviesArray == null || moviesArray.size() == 0) {
+                System.out.println("No movies found for this genre/page.");
+                return;
+            }
+
+            for (int i = 0; i < moviesArray.size(); i++) {
+                JsonObject m = moviesArray.get(i).getAsJsonObject();
+                System.out.println("ID: " + m.get("id").getAsLong() + " | " + m.get("title").getAsString() + " (" + m.get("year").getAsString() + ")");
+            }
+
+            System.out.println("Total Movies: " + rootObject.get("total").getAsString());
+            System.out.println("Total Pages: " + rootObject.get("total_pages").getAsString());
 
         } catch (Exception e) {
             System.err.println("ERROR: " + e.getMessage());
@@ -114,44 +116,21 @@ 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;
-            // String url = MOVIE_BY_ID_URL + movieId;
+            HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
-            // HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
+            HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
-            // HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+            if (response.statusCode() == 200) {
-            // if (response.statusCode() == 200) return response.body();
+                return response.body();
-
+            }
-            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:
 
            =======================================================================
@@ -171,20 +150,35 @@ public class MovieService {
      */
 
     public void displayMovieDetails(Long movieId) {
-        // Step 1: Get JSON response from API
+
         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) {
             System.out.println("Failed to get movie details for ID: " + movieId);
             return;
         }
         try {
-            // TODO: Parse jsonResponse to JsonObject
+            JsonObject movieJson = JsonParser.parseString(jsonResponse).getAsJsonObject();
-            // HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
+
-            // TODO: use Gson to parse the json
+            Gson gson = new Gson();
-            // Your code here:
+            Movie movie = gson.fromJson(movieJson, Movie.class);
+
+            String genreString = (movie.getGenres() != null) ? String.join(", ", movie.getGenres()) : "N/A";
+
+            System.out.println("\n=======================================================================");
+            System.out.println("                   " + movie.getTitle().toUpperCase() + " (" + movie.getYear() + ")");
+            System.out.println("=======================================================================");
+            System.out.println("Rating: " + movie.getImdb_rating() + "/10  |  Votes: " + movie.getImdb_votes());
+            System.out.println("Director: " + movie.getDirector());
+            System.out.println("Cast: " + movie.getActors());
+            System.out.println("Genre: " + genreString);
+            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());
         }