HW3 #9
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-1
@@ -8,7 +8,7 @@
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</list>
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</list>
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</option>
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</option>
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</component>
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</component>
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<component name="ProjectRootManager" version="2" languageLevel="JDK_25" project-jdk-name="25" project-jdk-type="JavaSDK">
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<component name="ProjectRootManager" version="2" languageLevel="JDK_25" project-jdk-name="ms-25" project-jdk-type="JavaSDK">
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<output url="file://$PROJECT_DIR$/out" />
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<output url="file://$PROJECT_DIR$/out" />
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</component>
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</component>
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</project>
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</project>
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@@ -54,42 +54,42 @@ public class Rational {
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// TODO: Instance method - this - other
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// TODO: Instance method - this - other
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// Formula: a/b - c/d = (a*d - c*b) / (b*d)
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// Formula: a/b - c/d = (a*d - c*b) / (b*d)
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public Rational subtract(Rational other) {
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public Rational subtract(Rational other) {
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// YOUR CODE HERE
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int newNumerator = this.numerator * other.denominator - other.numerator * this.denominator;
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return null; // Remove this line when implemented
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int newDenominator = this.denominator * other.denominator;
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return new Rational(newNumerator, newDenominator);
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}
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}
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// TODO: Static method - r1 - r2
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// TODO: Static method - r1 - r2
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public static Rational subtract(Rational r1, Rational r2) {
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public static Rational subtract(Rational r1, Rational r2) {
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// YOUR CODE HERE
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return r1.subtract(r2);
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return null; // Remove this line when implemented
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}
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}
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// TODO: Instance method - this * other
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// TODO: Instance method - this * other
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// Formula: (a/b) * (c/d) = (a*c) / (b*d)
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// Formula: (a/b) * (c/d) = (a*c) / (b*d)
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public Rational multiply(Rational other) {
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public Rational multiply(Rational other) {
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// YOUR CODE HERE
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int newNumerator = this.numerator * other.numerator;
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return null; // Remove this line when implemented
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int newDenominator = this.denominator * other.denominator;
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return new Rational(newNumerator, newDenominator);
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}
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}
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// TODO: Static method - r1 * r2
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// TODO: Static method - r1 * r2
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public static Rational multiply(Rational r1, Rational r2) {
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public static Rational multiply(Rational r1, Rational r2) {
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// YOUR CODE HERE
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return r1.multiply(r2);
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return null; // Remove this line when implemented
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}
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}
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// TODO: Instance method - this / other
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// TODO: Instance method - this / other
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// Formula: (a/b) ÷ (c/d) = (a*d) / (b*c)
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// Formula: (a/b) ÷ (c/d) = (a*d) / (b*c)
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public Rational divide(Rational other) {
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public Rational divide(Rational other) {
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// YOUR CODE HERE
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if (other.numerator == 0)
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// HINT: Division is multiplication by reciprocal
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throw new ArithmeticException("Cannot divide by zero");
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// Don't forget to check if other.numerator is zero!
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int newNumerator = this.numerator * other.denominator;
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return null; // Remove this line when implemented
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int newDenominator = this.denominator * other.numerator;
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return new Rational(newNumerator, newDenominator);
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}
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}
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// TODO: Static method - r1 / r2
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// TODO: Static method - r1 / r2
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public static Rational divide(Rational r1, Rational r2) {
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public static Rational divide(Rational r1, Rational r2) {
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// YOUR CODE HERE
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return r1.divide(r2);
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return null; // Remove this line when implemented
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}
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}
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// PROVIDED - String representation
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// PROVIDED - String representation
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@@ -21,15 +21,15 @@ public class Main {
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break;
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break;
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case 2:
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case 2:
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// TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
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Long genreId = getLongInput("Enter genre ID: ");
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Long page = getLongInput("Enter page number: ");
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movieService.displayMoviesByGenre(genreId, page);
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break;
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break;
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case 3:
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case 3:
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// TODO (BONUS): Get movie ID from user, then call movieService.displayMovieDetails()
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Long movieId = getLongInput("Enter movie ID: ");
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movieService.displayMovieDetails(movieId);
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break;
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break;
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case 0:
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case 0:
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@@ -15,10 +15,35 @@ public class Movie {
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private String year;
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private String year;
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private String imdb_rating;
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private String imdb_rating;
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private String country;
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private String country;
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public Movie(Long id, String title, List<String> genres, List<String> images, String year, String imdb_rating, String country) {
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// TODO: Create a constructor with all fields
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this.id = id;
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this.title = title;
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// TODO: Create a simple constructor with id and title only
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this.genres = genres;
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this.images = images;
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// TODO: Create getters and setters for all fields
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this.year = year;
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this.imdb_rating = imdb_rating;
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this.country = country;
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}
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public Movie(Long id, String title) {
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this.id = id;
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this.title = title;
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}
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public Long getId() {
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return id;
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}
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public String getTitle() {
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return title;
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}
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public List<String> getGenres() {
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return genres;
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}
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public String getYear() {
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return year;
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}
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public String getImdbRating() {
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return imdb_rating;
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}
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public String toString() {
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return id + ": " + title + " (" + year + ")";
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}
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}
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}
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@@ -106,9 +106,26 @@ public class MovieService {
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// TODO: Write your code here
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// TODO: Write your code here
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// All parsing code must be inside try-catch
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// All parsing code must be inside try-catch
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try {
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try {
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// Your code here
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String jsonResponse = getMoviesByGenreList(genreId, page);
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if (jsonResponse == null || jsonResponse.isEmpty()) {
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} catch (Exception e) {
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System.out.println("No response received.");
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return;
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}
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JsonObject rootObject = JsonParser.parseString(jsonResponse).getAsJsonObject();
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JsonArray moviesArray = rootObject.getAsJsonArray("movies");
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int total = rootObject.get("total").getAsInt();
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int totalPages = rootObject.get("total_pages").getAsInt();
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Type movieListType = new TypeToken<ArrayList<Movie>>() {}.getType();
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Gson gson = new Gson();
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List<Movie> movies = gson.fromJson(moviesArray, movieListType);
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System.out.println("Movies:");
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for (Movie movie : movies) {
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System.out.println("ID: " + movie.getId() + " | " + movie.getTitle() + " (" + movie.getYear() + ")");
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}
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System.out.println("Total movies: " + total);
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System.out.println("Total pages: " + totalPages);
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}
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catch (Exception e) {
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System.err.println("ERROR: " + e.getMessage());
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System.err.println("ERROR: " + e.getMessage());
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}
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}
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}
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}
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