Compare commits
| Author | SHA1 | Date | |
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6a01e43eb2 | ||
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cafed6c3ab |
@@ -54,44 +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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int newNumerator = this.numerator * other.denominator - other.numerator * this.denominator;
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// YOUR CODE HERE
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int newDenominator = this.denominator * other.denominator;
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return null; // Remove this line when implemented
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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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return r1.subtract(r2);
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// YOUR CODE HERE
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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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int newNumerator = this.numerator * other.numerator;
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// YOUR CODE HERE
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int newDenominator = this.denominator * other.denominator;
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return null; // Remove this line when implemented
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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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return r1.multiply(r2);
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// YOUR CODE HERE
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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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if(other.numerator == 0){
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// YOUR CODE HERE
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throw new IllegalArgumentException("Denominator cannot be zero");
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// HINT: Division is multiplication by reciprocal
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}
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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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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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}
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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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return r1.divide(r2);
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// YOUR CODE HERE
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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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@@ -22,16 +22,14 @@ public class Main {
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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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// 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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// 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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@@ -15,149 +15,10 @@ 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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private String actors;
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private String awards;
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private String director;
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private String imdb_id;
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private String imdb_votes;
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private String metascore;
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private String plot;
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private String rated;
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private String released;
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private String runtime;
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private String type;
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private String writer;
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// TODO: Create a constructor with all fields
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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, 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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// 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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// 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 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 List<String> getImages() {
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return images;
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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 String getYear() {
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return year;
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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 String getActors() {
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return actors;
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}
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public String getAwards() {
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return awards;
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}
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public String getDirector() {
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return director;
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}
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public String getImdb_id() {
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return imdb_id;
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}
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public String getImdb_votes() {
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return imdb_votes;
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}
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public String getMetascore() {
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return metascore;
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}
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public String getPlot() {
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return plot;
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}
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public String getRated() {
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return rated;
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}
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public String getReleased() {
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return released;
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}
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public String getRuntime() {
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return runtime;
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}
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public String getType() {
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return type;
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}
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public String getWriter() {
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return writer;
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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 void setImages(List<String> images) {
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this.images = images;
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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 void setYear(String year) {
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this.year = year;
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}
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public void setAwards(String awards) {
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this.year = awards;
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}
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public void setDirector(String director) {
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this.year = director;
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}
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public void setMetascoret(String metascore) {
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this.year = metascore;
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}
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public void setPlot(String plot) {
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this.year = plot;
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}
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public void setImdb_id(String imdb_id) {
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this.year = imdb_id;
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}
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public void setImdb_votes(String imdb_votes) {
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this.year = imdb_votes;
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}
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public void setRated(String rated) {
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this.year = rated;
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}
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public void setReleased(String released) {
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this.year = released;
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}
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public void setType(String type) {
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this.year = type;
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}
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public void setRuntime(String runtime) {
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this.year = runtime;
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}
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public void setWriter(String writer) {
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this.year = writer;
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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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@Override
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public String toString() {
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return id + ". " + title;
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}
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}
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}
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@@ -87,27 +87,26 @@ public class MovieService {
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}
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}
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}
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}
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/**
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* TODO 1: Display movies for a specific genre and page
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*
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* Open this link in your browser (and check Pretty-print checkbox) to view json format:
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* https://api.meshcomp.ir/api/v1/genres/1/movies
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*
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* Steps:
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* - Call getMoviesByGenreList(genreId, page) to get JSON
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* - Parse JSON to JsonObject
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* - Get "movies" array (NOT "data")
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* - Loop through array and print: "ID: {id} | {title} ({year})"
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* - Also print total and total_pages
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*
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* PUT ALL PARSING CODE INSIDE try-catch
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*/
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public void displayMoviesByGenre(Long genreId, Long page) {
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public void displayMoviesByGenre(Long genreId, Long page) {
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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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try {
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try {
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// Your code here
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String jsonAsString = getMoviesByGenreList(genreId, page);
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JsonObject jsonObj = JsonParser.parseString(jsonAsString).getAsJsonObject();
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JsonArray moviesArray = jsonObj.getAsJsonArray("movies");
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List<Movie> movies = new ArrayList<>();
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for(JsonElement movie : moviesArray){
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JsonObject movieAsObj = movie.getAsJsonObject();
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System.out.printf("ID: %d | %s (%d)\n\n",
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movieAsObj.get("id").getAsLong(), movieAsObj.get("title").getAsString(), movieAsObj.get("year").getAsLong());
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movies.add(new Movie(movieAsObj.get("id").getAsLong(),
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movieAsObj.get("title").getAsString()));
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}
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System.out.printf("Total: %d, total_pages: %d\n\n",
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jsonObj.get("total").getAsLong(), jsonObj.get("total_pages").getAsLong());
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} catch (Exception e) {
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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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@@ -122,10 +121,10 @@ public class MovieService {
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private String getMovieById(Long movieId) {
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private String getMovieById(Long movieId) {
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try {
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try {
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// TODO: Complete this method
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// TODO: Complete this method
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String url = MOVIE_BY_ID_URL + movieId;
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// String url = MOVIE_BY_ID_URL + movieId;
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HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
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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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// HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
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if (response.statusCode() == 200) return response.body();
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// if (response.statusCode() == 200) return response.body();
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return null;
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return null;
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} catch (Exception e) {
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} catch (Exception e) {
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@@ -134,10 +133,46 @@ public class MovieService {
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return null;
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return null;
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}
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}
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/*
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BONUS TODO: Display complete movie details for a given movie ID
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Open this link in your browser (and check Pretty-print checkbox) to view json format:
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https://api.meshcomp.ir/api/v1/movies/1
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INSTRUCTIONS:
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1. Call getMovieById(movieId) to get the JSON response string
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2. Check if response is null (if yes, print error and return)
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3. Parse the JSON string to JsonObject (inside try-catch)
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4. Use Gson to extract all fields from the JSON and map them to your Movie class:
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- Add missing JSON fields to your Movie class first (actors, awards, director,
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imdb_id, imdb_votes, metascore, plot, rated, released, runtime, type, writer)
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- Then use Gson to parse your json string
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5. Print all movie details in a readable format
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(PUT ALL PARSING CODE INSIDE THE EXISTING try-catch)
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*/
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/* EXAMPLE OUTPUT:
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=======================================================================
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THE SHAWSHANK REDEMPTION (1994)
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=======================================================================
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Rating: 9.3/10 | Votes: 1,738,596
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Director: Frank Darabont
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Cast: Tim Robbins, Morgan Freeman, Bob Gunton, William Sadler
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Genre: Crime, Drama
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Runtime: 142 min | Rated: R
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Country: USA | Released: 14 Oct 1994
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Plot: Two imprisoned men bond over a number of years, finding
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solace and eventual redemption through acts of common decency.
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Awards: Nominated for 7 Oscars. Another 19 wins & 30 nominations.
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=======================================================================
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*/
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public void displayMovieDetails(Long movieId) {
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public void displayMovieDetails(Long movieId) {
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// Step 1: Get JSON response from API
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// Step 1: Get JSON response from API
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String jsonResponse = getMovieById(movieId);
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String jsonResponse = getMovieById(movieId);
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// System.out.println(jsonResponse + "\n");
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// Step 2: Check if we got valid data
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// Step 2: Check if we got valid data
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// Step 3-5: Parse JSON and display details (PUT YOUR CODE INSIDE try-catch)
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// Step 3-5: Parse JSON and display details (PUT YOUR CODE INSIDE try-catch)
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@@ -148,23 +183,8 @@ public class MovieService {
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try {
|
try {
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// TODO: Parse jsonResponse to JsonObject
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// TODO: Parse jsonResponse to JsonObject
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// HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
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// HINT: Use JsonParser.parseString(jsonResponse).getAsJsonObject()
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JsonObject moviesObj = JsonParser.parseString(jsonResponse).getAsJsonObject();
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// TODO: use Gson to parse the json
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// TODO: use Gson to parse the json
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Gson gson = new Gson();
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// Your code here:
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Movie movie = gson.fromJson(moviesObj, Movie.class);
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String output = " =======================================================================\n" +
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" "+ movie.getTitle() +"\n" +
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" =======================================================================\n" +
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" Rating: "+ movie.getImdb_rating() +" | Votes: "+ movie.getImdb_votes() + "\n" +
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" Director: "+ movie.getDirector() +"\n" +
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" Cast: "+ movie.getActors() +"\n" +
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" Genre: "+ movie.getGenres() +"\n" +
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" Runtime: "+ movie.getRuntime() +" | Rated: "+ movie.getRated() +"\n" +
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" Country: "+ movie.getCountry() +" | Released: "+ movie.getReleased() +"\n" +
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" Plot: " + movie.getPlot() +
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"\n =======================================================================";
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System.out.println(output);
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|
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|
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} catch (Exception e) {
|
} catch (Exception e) {
|
||||||
System.err.println("ERROR parsing movie details: " + e.getMessage());
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System.err.println("ERROR parsing movie details: " + e.getMessage());
|
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}
|
}
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|
|||||||
Reference in New Issue
Block a user