Question

***JAVA LANGUAGE, NO CHANGES NEEDED FOR THE Movie CLASS. USE THIS AS A REFERENCE***

public class Movie {
private String title;
private int length;
private static int numMovies = 0;

public Movie() {
this("", 0);
}

public Movie(String title, int length) {
this.title = title;
this.length = length;
++numMovies;
}

public String getTitle() { return this.title; }
public int getLength() { return this.length; }
public static int getNumMovies() { return numMovies; }

public void setTitle(String title) {
this.title = title;
}

public boolean setLength(int length) {
if (length > 0) {
this.length = length;
return true;
}
else {
return false;
}
}
}

***IMPLEMENTATION CLASS BELOW HAS 3 BLOCKS OF CODE NEEDED. LOOK FOR THE COMMENTS LABELED "BLOCK"***

import javax.swing.JOptionPane;
public class TheatreIncomplete {
   public static void main(String[] args) {
      final int NUM_MOVIES = 5;
      Movie[] movies = new Movie[NUM_MOVIES];

      int x = 0;
      do {
      
         /** START: BLOCK #1
          * In the block below, enter code that will first check if there is room to enter another movie in the
          * movies array. If there is, call the add the movie to the array using the inputMovie() method.
          * Else, if there is not, display an error message to the user letting them know the maximum nubmer of movies
          * that can be entered.
          * Hint: To check the number of movies already entered, use the getNumMovies() static method
          */
         
         
         
         /** END: BLOCK #1 **/         

      }
      while (JOptionPane.showConfirmDialog(null, "Enter another movie?") == JOptionPane.YES_OPTION);

      Movie shortestMovie = getShortest(movies);
      printSummary(movies, shortestMovie);
   }

   private static Movie inputMovie() {
      Movie aMovie = new Movie();
      
      aMovie.setTitle(JOptionPane.showInputDialog(null, "Enter the title for movie " + Movie.getNumMovies() + ": "));
      
      int length;
      boolean isLengthSet = false;
      do {
         try {
            length = Integer.parseInt(JOptionPane.showInputDialog("Enter the length of " + aMovie.getTitle() + " in (minutes)"));
         }
         catch (NumberFormatException e) {
            length = -1;
         }
         isLengthSet = aMovie.setLength(length);
         if (!isLengthSet) {
            JOptionPane.showMessageDialog(null, "Sorry, you entered an invalid movie length. Please try again.");
         }
      } while(!isLengthSet);
      
      return aMovie;
   }
   
   private static Movie getShortest(Movie[] movies) {
      Movie aMovie = null;
      
      if (movies.length > 0) {
         
         /** START: BLOCK #2
          * In the block below, enter code that will find the movie object containing the shortest length
          * Hint: You will need to loop through all movies to find the shortest
          */
         
         
         
         /** END: BLOCK #2 **/
      }
      
      return aMovie;
   }
   
   private static void printSummary(Movie[] movies, Movie shortestMovie) {
      String summary="**Movie Summary**\n";
      
      /** START: BLOCK #3
       * First, using the summary variable declared above, loop through all of the movies entered, appending the title of each
       * movie to the summary. Then, append to the summary the number of movies entered, the title of the shortest movie
      * and the length of the shortest movie
       * Hint: To get the number of movies entered, use the getNumMovies() static method
       * Hint: To get the title and length of the shortest movie, use the object reference passed into the method
       */
      
              
      /** END: BLOCK #3 **/
              
      JOptionPane.showMessageDialog(null, summary);
   }
}

If you are not familiar with JOptionPane you can just code with Scanner and I will change it. Thank you.

Answer 1

Modified program with all three blocks

Program :

ThreatreIncomplete.java

/***IMPLEMENTATION CLASS BELOW HAS 3 BLOCKS OF CODE NEEDED. LOOK FOR THE COMMENTS LABELED "BLOCK"***/

import javax.swing.JOptionPane;

public class TheatreIncomplete {
   public static void main(String[] args) {
      final int NUM_MOVIES = 5;
      Movie[] movies = new Movie[NUM_MOVIES];

      int x = 0;
      do {
      
         /** START: BLOCK #1
          * In the block below, enter code that will first check if there is room to enter another movie in the
          * movies array. If there is, call the add the movie to the array using the inputMovie() method.
          * Else, if there is not, display an error message to the user letting them know the maximum nubmer of movies
          * that can be entered.
          * Hint: To check the number of movies already entered, use the getNumMovies() static method
          */
          //checking if there is room for another movie or not
                  if(Movie.getNumMovies() < NUM_MOVIES) {
                          movies[Movie.getNumMovies()] = inputMovie(); 
                  }
                  else {
                          //displaying error message
                          JOptionPane.showMessageDialog(null, "Sorry, You can only enter "+NUM_MOVIES+" movies maximum!");
                  }
         
         
         
         /** END: BLOCK #1 **/         

      }
      while (JOptionPane.showConfirmDialog(null, "Enter another movie?") == JOptionPane.YES_OPTION);

      Movie shortestMovie = getShortest(movies);
      printSummary(movies, shortestMovie);
   }

   private static Movie inputMovie() {
      Movie aMovie = new Movie();
      
      aMovie.setTitle(JOptionPane.showInputDialog(null, "Enter the title for movie " + Movie.getNumMovies() + ": "));
      
      int length;
      boolean isLengthSet = false;
      do {
         try {
            length = Integer.parseInt(JOptionPane.showInputDialog("Enter the length of " + aMovie.getTitle() + " in (minutes)"));
         }
         catch (NumberFormatException e) {
            length = -1;
         }
         isLengthSet = aMovie.setLength(length);
         if (!isLengthSet) {
            JOptionPane.showMessageDialog(null, "Sorry, you entered an invalid movie length. Please try again.");
         }
      } while(!isLengthSet);
      
      return aMovie;
   }
   
   private static Movie getShortest(Movie[] movies) {
      Movie aMovie = null;
      
      if (movies.length > 0) {
         
         /** START: BLOCK #2
          * In the block below, enter code that will find the movie object containing the shortest length
          * Hint: You will need to loop through all movies to find the shortest
          */
        //initially taking min as max integer value
                int minLength = Integer.MAX_VALUE;
                //loop for the movies which are available
                //to find the shortest movie
                for(int i=0; i<Movie.getNumMovies(); i++) {
                        
                        if(movies[i].getLength() < minLength) {
                                minLength = movies[i].getLength();
                                aMovie = movies[i];
                        }
                }
         
         
         
         /** END: BLOCK #2 **/
      }
      
      return aMovie;
   }
   
   private static void printSummary(Movie[] movies, Movie shortestMovie) {
      String summary="**Movie Summary**\n";
      
      /** START: BLOCK #3
       * First, using the summary variable declared above, loop through all of the movies entered, appending the title of each
       * movie to the summary. Then, append to the summary the number of movies entered, the title of the shortest movie
      * and the length of the shortest movie
       * Hint: To get the number of movies entered, use the getNumMovies() static method
       * Hint: To get the title and length of the shortest movie, use the object reference passed into the method
       */
      // taking title of each movie
       for(int i=0; i<Movie.getNumMovies(); i++) {
                 summary = summary + movies[i].getTitle()+"\n";
           }
           
       //adding the number of movies to summary
           summary = summary + "Number of Movies Entered : "+Movie.getNumMovies()+"\n";
           //adding shortest movie information to summary
           summary = summary + "Shortest Movie : \nTitle : "+shortestMovie.getTitle()+"\nLength : "+shortestMovie.getLength();
      
              
      /** END: BLOCK #3 **/
              
      JOptionPane.showMessageDialog(null, summary);
   }
}

Movie.java

/***JAVA LANGUAGE, NO CHANGES NEEDED FOR THE Movie CLASS. USE THIS AS A REFERENCE***/

public class Movie {
    private String title;
    private int length;
    private static int numMovies = 0;

    public Movie() {
        this("", 0);
    }
    
    public Movie(String title, int length) {
        this.title = title;
        this.length = length;
        ++numMovies;
    }

    public String getTitle() { return this.title; }
    public int getLength() { return this.length; }
    public static int getNumMovies() { return numMovies; }

    public void setTitle(String title) {
        this.title = title;
    }

    public boolean setLength(int length) {
        if (length > 0) {
            this.length = length;
            return true;
        }
        else {
            return false;
        }
    }
}

output screenshots :

Program screenshot: