complete tasks #4
@@ -54,27 +54,32 @@ public class Rational {
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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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public Rational subtract(Rational other) {
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// YOUR CODE HERE
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return null; // Remove this line when implemented
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int newNumerator = this.numerator * other.denominator - other.numerator * this.denominator;
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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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// TODO: Static method - r1 - 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 null; // Remove this line when implemented
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return r1.subtract(r2);
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}
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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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public Rational multiply(Rational other) {
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// YOUR CODE HERE
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return null; // Remove this line when implemented
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int newNumerator = this.numerator * other.numerator;
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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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// TODO: Static method - r1 * 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 null; // Remove this line when implemented
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int newNumerator = r1.numerator * r2.numerator;
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int newDenominator = r1.denominator * r2.denominator;
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return new Rational(newNumerator, newDenominator);
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}
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// TODO: Instance method - this / other
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@@ -83,13 +88,19 @@ public class Rational {
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// YOUR CODE HERE
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// HINT: Division is multiplication by reciprocal
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// Don't forget to check if other.numerator is zero!
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return null; // Remove this line when implemented
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if (other.numerator == 0) {
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throw new ArithmeticException("Cannot divide by zero");
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}
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int newNumerator = this.numerator * other.denominator;
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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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// TODO: Static method - r1 / 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 null; // Remove this line when implemented
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return r1.divide(r2);
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}
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// PROVIDED - String representation
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@@ -23,12 +23,19 @@ public class Main {
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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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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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@@ -17,8 +17,77 @@ public class Movie {
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private String country;
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// TODO: Create a constructor with all fields
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public Movie(Long id, String title, List<String> genres, List<String> images,
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String year, String imdb_rating, String country) {
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this.id = id;
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this.title = title;
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this.genres = genres;
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this.images = images;
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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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// TODO: Create a simple constructor with id and title only
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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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// TODO: Create getters and setters for all fields
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public Long getId() {
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return id;
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}
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public void setId(Long id) {
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this.id = 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 void setTitle(String title) {
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this.title = 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 void setGenres(List<String> genres) {
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this.genres = genres;
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}
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public List<String> getImages() {
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return images;
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}
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public void setImages(List<String> images) {
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this.images = images;
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}
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// TODO: Create getters and setters for all fields
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public String getYear() {
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return year;
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}
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public void setYear(String year) {
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this.year = year;
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}
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public String getImdb_rating() {
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return imdb_rating;
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}
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public void setImdb_rating(String imdb_rating) {
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this.imdb_rating = imdb_rating;
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}
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public String getCountry() {
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return country;
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}
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public void setCountry(String country) {
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this.country = country;
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}
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}
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@@ -107,6 +107,34 @@ public class MovieService {
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// All parsing code must be inside try-catch
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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) {
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System.out.println("Failed to get movies");
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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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System.out.println("\nMOVIES LIST:\n");
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for (JsonElement element : moviesArray) {
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JsonObject movieObj = element.getAsJsonObject();
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Long id = movieObj.get("id").getAsLong();
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String title = movieObj.get("title").getAsString();
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String year = movieObj.get("year").getAsString();
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System.out.println("ID: " + id + " | " + title + " (" + year + ")");
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}
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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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System.out.println("\nTotal Movies: " + total);
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System.out.println("Total Pages: " + totalPages);
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} catch (Exception e) {
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System.err.println("ERROR: " + e.getMessage());
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@@ -125,7 +153,17 @@ public class MovieService {
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// HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
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// HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
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// if (response.statusCode() == 200) return response.body();
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String url = MOVIE_BY_ID_URL + movieId;
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HttpRequest request = HttpRequest.newBuilder()
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.uri(URI.create(url))
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.build();
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HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
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if (response.statusCode() == 200) {
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return response.body();
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}
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return null;
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} catch (Exception e) {
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System.out.println("!!Exception : " + e.getMessage());
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Reference in New Issue
Block a user