Merge pull request 'Movie Explorer + Rational Calculator' (#1) from develop into main
Reviewed-on: #1
This commit was merged in pull request #1.
This commit is contained in:
@@ -1,12 +1,15 @@
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package Rational;
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public class Rational {
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public class Rational
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{
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private int numerator;
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private int denominator;
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// Constructor
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public Rational(int numerator, int denominator) {
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if (denominator == 0) {
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public Rational(int numerator, int denominator)
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{
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if (denominator == 0)
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{
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throw new IllegalArgumentException("Denominator cannot be zero");
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}
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this.numerator = numerator;
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@@ -15,10 +18,12 @@ public class Rational {
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}
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// GCD helper for simplification
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private int gcd(int a, int b) {
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private int gcd(int a, int b)
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{
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a = Math.abs(a);
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b = Math.abs(b);
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while (b != 0) {
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while (b != 0)
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{
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int temp = b;
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b = a % b;
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a = temp;
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@@ -27,82 +32,95 @@ public class Rational {
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}
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// Simplify the fraction
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private void simplify() {
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private void simplify()
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{
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int gcd = gcd(numerator, denominator);
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numerator /= gcd;
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denominator /= gcd;
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// Keep denominator positive
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if (denominator < 0) {
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if (denominator < 0)
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{
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numerator = -numerator;
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denominator = -denominator;
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}
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}
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// COMPLETED - Instance method: this + other
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public Rational add(Rational other) {
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// Instance method: this + other
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public Rational add(Rational other)
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{
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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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// COMPLETED - Static method: r1 + r2
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public static Rational add(Rational r1, Rational r2) {
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// Static method: r1 + r2
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public static Rational add(Rational r1, Rational r2)
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{
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return r1.add(r2);
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}
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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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// Instance method - this - other
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public Rational subtract(Rational other)
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{
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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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// Static method - r1 - r2
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public static Rational subtract(Rational r1, Rational r2)
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{
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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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// Instance method - this * other
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public Rational multiply(Rational other)
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{
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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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// Static method - r1 * r2
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public static Rational multiply(Rational r1, Rational r2)
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{
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return r1.multiply(r2);
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}
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// TODO: Instance method - this / other
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// Instance method - this / other
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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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// 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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public Rational divide(Rational other)
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{
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if (other.numerator == 0)
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{
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throw new ArithmeticException("Division by zero rational number.");
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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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// Static method - r1 / r2
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public static Rational divide(Rational r1, Rational r2)
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{
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return r1.divide(r2);
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}
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// PROVIDED - String representation
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// String representation
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@Override
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public String toString() {
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if (denominator == 1) {
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public String toString()
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{
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if (denominator == 1)
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{
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return numerator + "";
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}
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return numerator + "/" + denominator;
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}
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// PROVIDED - Decimal value
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public double toDouble() {
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// Decimal value
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public double toDouble()
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{
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return (double) numerator / denominator;
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}
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}
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@@ -15,37 +15,36 @@ public class Main {
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displayMenu();
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int choice = getIntInput("Enter your choice: ");
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switch (choice) {
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switch (choice)
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{
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case 1:
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movieService.displayGenres();
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break;
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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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case 0:
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running = false;
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System.out.println("Goodbye!");
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break;
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default:
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System.out.println("Invalid choice! Please enter 0-4");
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System.out.println("Invalid choice! Please enter 0–3");
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}
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if (running) {
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if (running)
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{
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System.out.println("\nPress Enter to continue...");
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scanner.nextLine();
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scanner.nextLine();
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}
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}
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@@ -70,7 +69,7 @@ public class Main {
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scanner.next();
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}
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int input = scanner.nextInt();
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scanner.nextLine();
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scanner.nextLine(); // consume newline
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return input;
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}
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@@ -81,7 +80,7 @@ public class Main {
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scanner.next();
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}
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Long input = scanner.nextLong();
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scanner.nextLine();
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scanner.nextLine(); // consume newline
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return input;
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}
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}
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@@ -2,12 +2,8 @@ package movie.apis;
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import java.util.List;
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/**
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* Model class representing a movie
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* Fields: id, title, genres, images
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*/
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public class Movie {
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public class Movie
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{
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private Long id;
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private String title;
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private List<String> genres;
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@@ -16,9 +12,187 @@ public class Movie {
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private String imdb_rating;
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private String country;
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// TODO: Create a constructor with all fields
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private String imdb_votes;
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private String director;
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private List<String> actors;
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private String runtime;
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private String rated;
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private String released;
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private String plot;
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private String awards;
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// TODO: Create a simple constructor with id and title only
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// 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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{
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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 getters and setters for all fields
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// Simple constructor with id and title only
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public Movie(Long id, String title)
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{
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this.id = id;
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this.title = title;
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this.genres = null;
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this.images = null;
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this.year = null;
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this.imdb_rating = null;
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this.country = null;
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}
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// Getters and setters for all fields
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public Long getId()
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{
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return id;
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}
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public void setId(Long id)
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{
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this.id = id;
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}
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public String getTitle()
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{
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return title;
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}
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public void setTitle(String title)
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{
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this.title = title;
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}
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public List<String> getGenres()
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{
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return genres;
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}
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public void setGenres(List<String> genres)
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{
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this.genres = genres;
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}
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public List<String> getImages()
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{
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return images;
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}
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public void setImages(List<String> images)
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{
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this.images = images;
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}
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public String getYear()
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{
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return year;
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}
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public void setYear(String year)
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{
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this.year = year;
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}
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public String getImdb_rating()
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{
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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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{
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this.imdb_rating = imdb_rating;
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}
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public String getCountry()
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{
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return country;
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}
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public void setCountry(String country)
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{
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this.country = country;
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}
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public String getImdb_votes()
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{
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return imdb_votes;
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}
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public void setImdb_votes(String imdb_votes)
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{
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this.imdb_votes = imdb_votes;
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}
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public String getDirector()
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{
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return director;
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}
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public void setDirector(String director)
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{
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this.director = director;
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}
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public List<String> getActors()
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{
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return actors;
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}
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public void setActors(List<String> actors)
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{
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this.actors = actors;
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}
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public String getRuntime()
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{
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return runtime;
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}
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public void setRuntime(String runtime)
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{
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this.runtime = runtime;
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}
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public String getRated()
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{
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return rated;
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}
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public void setRated(String rated)
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{
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this.rated = rated;
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}
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public String getReleased()
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{
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return released;
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}
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public void setReleased(String released)
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{
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this.released = released;
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}
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public String getPlot()
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{
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return plot;
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}
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public void setPlot(String plot)
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{
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this.plot = plot;
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}
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public String getAwards()
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{
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return awards;
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}
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public void setAwards(String awards)
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{
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this.awards = awards;
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}
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}
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@@ -12,7 +12,8 @@ import java.lang.reflect.Type;
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import java.util.ArrayList;
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import java.util.List;
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public class MovieService {
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public class MovieService
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{
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private final static String GENRES_URL = "https://api.meshcomp.ir/api/v1/genres";
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private final static String MOVIE_BY_ID_URL = "https://api.meshcomp.ir/api/v1/movies/";
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@@ -60,8 +61,6 @@ public class MovieService {
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return null;
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}
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public void displayGenres() {
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String jsonResponse = getGenresList();
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@@ -87,105 +86,112 @@ public class MovieService {
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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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// 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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||||
// Your code here
|
||||
|
||||
} catch (Exception e) {
|
||||
public void displayMoviesByGenre(Long genreId, Long page)
|
||||
{
|
||||
try
|
||||
{
|
||||
String jsonResponse = getMoviesByGenreList(genreId, page);
|
||||
|
||||
if (jsonResponse == null)
|
||||
{
|
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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<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
// if (response.statusCode() == 200) return response.body();
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(URI.create(url))
|
||||
.build();
|
||||
|
||||
HttpResponse<String> 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) {
|
||||
}
|
||||
}
|
||||
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());
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user