In Java This program introduces the concept of inheritance by creating subclasse

ID: 3847446 • Letter: I

Question

In Java

This program introduces the concept of inheritance by creating subclasses of a Movie class.

The program should have two classes: MoviesClass.java
MoviesMainClass.java

Create a class named MoviesClass.

TheMoviesClass class should track the Motion Picture Association of America (MPAA) rating (e.g., Rated G, PG-13, R, etc.), ID Number, and movie title with appropriate accessor and mutator methods.

Inside the MovieClass create an equals( ) method that overrides MovieClass equals ( ) method, such that two movies are equal if their ID number is identical.

Inside the MovieClass create three additional movie rating type classes named:

ActionMovie ComedyMovie DramaMovie

that are derived from Movie.
Create an overridden method named calcLateFees that takes as input the number of days a movie is late and returns

the late fee for that movie rating type.

Create a method called toString() that displays all the movie object values and states in a well formatted manner. The following are the late fees for movie rating types:

Default

$2.00/day

Action

$3.00/day

Comedies

$2.50/day

Dramas

$2.00/day.

Test your classes from a main method.

The main class must include driver code that tests all the objects paths. The driver code in the main class should not be prompted based.

Explanation / Answer

// MoviesClass.java
public class MoviesClass
{
   private String movieRating;
   private int IDnumber;
   private String movieTitle;

   public MoviesClass()
   {
       movieRating = "";
       IDnumber = 0;
       movieTitle = "";
   }

   public MoviesClass(String rating, int id, String title)
   {
       movieRating = rating;
       IDnumber = id;
       movieTitle = title;
   }

   public String getmovieRating()
   {
       return movieRating;
   }

   public void setmovieRating(String rating)
   {
       movieRating = rating;
   }

   public int getIDnumber()
   {
       return IDnumber;
   }

   public void setIDnumber(int id)
   {
       IDnumber = id;
   }

   public String getmovieTitle()
   {
       return movieTitle;
   }

   public void setmovieTitle(String title)
   {
       movieTitle = title;
   }

   public double calcLateFees(int days)
   {
       return 2.0 * days;
   }

   public boolean equals(Object movieobject)
   {
       if(movieobject == null)
           return false;
       else if(getClass() != movieobject.getClass())
           return false;
       else
       {
           MoviesClass other = (MoviesClass)movieobject;

           return (movieRating.equals(other.movieRating) && IDnumber == other.IDnumber && movieTitle.equals(other.movieTitle));
       }
   }

   public String toString()
   {
       return " MPAA Rating: " + movieRating + " ID Number: " + IDnumber+ " Movie Title: " + movieTitle;
   }
}

// DramaMovie.java
public class DramaMovie extends MoviesClass
{
   public DramaMovie()
   {
       super();
   }

   public DramaMovie(String rating, int id, String title)
   {
       super(rating, id, title);
   }

   public double calcLateFees(int days)
   {
       return 2.0 * days;
   }
}

// ComedyMovie.java
public class ComedyMovie extends MoviesClass
{
   public ComedyMovie()
   {
       super();
   }

   public ComedyMovie(String aRating, int aID, String aTitle)
   {
       super(aRating, aID, aTitle);
   }

   public double calcLateFees(int days)
   {
       return 2.5 * days;
   }
}

// ActionMovie.java
public class ActionMovie extends MoviesClass
{
   public ActionMovie()
   {
       super();
   }

   public ActionMovie(String aRating, int aID, String aTitle)
   {
       super(aRating, aID, aTitle);
   }

   public double calcLateFees(int days)
   {
       return 3.0 * days;
   }
}

// MoviesMainClass.java
public class MoviesMainClass
{
   public static void main(String[] args)
   {
       MoviesClass movie = new MoviesClass("PG-11", 3691, "Guardians of Galaxy");
       System.out.println(movie);
       System.out.println("Late Fee: $" + movie.calcLateFees(6));

       ActionMovie action = new ActionMovie("A", 2587, "Dejavu");
       System.out.println(action);
       System.out.println("Late Fee: $" + action.calcLateFees(6));

       ComedyMovie comedy = new ComedyMovie("C", 7989, "Despicable me");
       System.out.println(comedy);
       System.out.println("Late Fee: $" + comedy.calcLateFees(6));

       DramaMovie drama = new DramaMovie("PG-12", 4563, "Honey I shrunk");
       System.out.println(drama);
       System.out.println("Late Fee: $" + drama.calcLateFees(6));
   }
}

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In Java This program introduces the concept of inheritance by creating subclasse

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