How do I make sure that numCastMembers expected: 0 in the overloaded parameterized constructor in Java? Code: import java.util.*; import java.util.Arrays; public class Movie { private String movieName; private int numMinutes; private boolean isKidFriendly; private int numCastMembers; private String[] castMembers; // default constructor public Movie() { this.movieName = "Flick"; this.numMinutes = 0; this.isKidFriendly = false; this.numCastMembers = 0; this.castMembers = new String[10]; } // overloaded parameterized constructor public Movie(String movieName, int numMinutes, boolean isKidFriendly, String[] castMembers) { this.movieName = movieName; this.numMinutes = numMinutes; this.isKidFriendly = isKidFriendly; this.numCastMembers = castMembers.length; this.castMembers = new String[numCastMembers]; for (int i = 0; i < castMembers.length; i++) { this.castMembers[i] = castMembers[i]; } } // set the number of minutes public void setNumMinutes(int numMinutes) { this.numMinutes = numMinutes; } // set the movie name public void setMovieName(String movieName) { this.movieName = movieName; } // set if the movie is kid friendly or not public void setIsKidFriendly(boolean isKidFriendly) { this.isKidFriendly = isKidFriendly; } // return the movie name public String getMovieName() { return this.movieName; } // return the number of minutes public int getNumMinutes() { return this.numMinutes; } // return true if movie is kid friendly else false public boolean isKidFriendly() { return this.isKidFriendly; } // return the array of cast members public String[] getCastMembers() { // create a deep copy of the array String[] copyCastMembers = new String[this.castMembers.length]; // copy the strings from the array to the copy for (int i = 0; i < this.castMembers.length; i++) { copyCastMembers[i] = this.castMembers[i]; } return copyCastMembers; } // return the number of cast members public int getNumCastMembers() { return this.numCastMembers; }

How do I make sure that numCastMembers expected: 0 in the overloaded parameterized constructor in Java?

Code:

import java.util.*;

import java.util.Arrays;

public class Movie

{

private String movieName;

private int numMinutes;

private boolean isKidFriendly;

private int numCastMembers;

private String[] castMembers;

// default constructor

public Movie()

{

this.movieName = "Flick";

this.numMinutes = 0;

this.isKidFriendly = false;

this.numCastMembers = 0;

this.castMembers = new String[10];

}

// overloaded parameterized constructor

public Movie(String movieName, int numMinutes, boolean isKidFriendly, String[] castMembers)

{

this.movieName = movieName;

this.numMinutes = numMinutes;

this.isKidFriendly = isKidFriendly;

this.numCastMembers = castMembers.length;

this.castMembers = new String[numCastMembers];

for (int i = 0; i < castMembers.length; i++)

{

this.castMembers[i] = castMembers[i];

}

}

// set the number of minutes

public void setNumMinutes(int numMinutes)

{

this.numMinutes = numMinutes;

}

// set the movie name

public void setMovieName(String movieName)

{

this.movieName = movieName;

}

// set if the movie is kid friendly or not

public void setIsKidFriendly(boolean isKidFriendly)

{

this.isKidFriendly = isKidFriendly;

}

// return the movie name

public String getMovieName()

{

return this.movieName;

}

// return the number of minutes

public int getNumMinutes()

{

return this.numMinutes;

}

// return true if movie is kid friendly else false

public boolean isKidFriendly()

{

return this.isKidFriendly;

}

// return the array of cast members

public String[] getCastMembers()

{

// create a deep copy of the array

String[] copyCastMembers = new String[this.castMembers.length];

// copy the strings from the array to the copy

for (int i = 0; i < this.castMembers.length; i++)

{

copyCastMembers[i] = this.castMembers[i];

}

return copyCastMembers;

}

// return the number of cast members

public int getNumCastMembers()

{

return this.numCastMembers;

}

// method that allows the name of a castMember at an index in the castMembers

// array to be changed

public boolean replaceCastMember(int index, String castMemberName)

{

if (index < 0 || index >= numCastMembers)

return false;

castMembers[index] = castMemberName;

return true;

}

// method that determines the equality of two String arrays and returns a

// boolean, by comparing the value at each index location.

// Return true if all elements of both arrays match, return false if there is

// any mismatch.

public boolean doArraysMatch(String[] arr1, String[] arr2)

{

// both arrays are null

if (arr1 == null && arr2 == null)

return true;

else if (arr1 == null || arr2 == null) // one of the array is null

return false;

else if (arr1.length != arr2.length) // length of arrays do not match

return false;

// length of both arrays are same

// loop over the arrays

for (int i = 0; i < arr1.length; i++)

{

// if ith element are not equal, return false

if (!arr1[i].equalsIgnoreCase(arr2[i]))

return false;

}

return true; // length of arrays are same and each element at respective location are same

}

// method that gets the contents of the array of castMembers as a comma

// separated String.

public String getCastMemberNamesAsString()

{

if (numCastMembers == 0)

{

return "none";

}

String names = castMembers[0];

for (int i = 1; i < numCastMembers; i++)

{

names += ", " + castMembers[i];

}

return names;

}

// return String representation of the movie

public String toString() {
    // format the numMinutes to 3 digits
   String movie = "Movie: [ Minutes "+String.format("%03d", numMinutes)+" | Movie Name: %21s |";
         if (isKidFriendly)
       movie +=" is kid friendly |";
     else
       movie +=" not kid friendly |";
   movie +=" Number of Cast Members: "+ numCastMembers+ " | Cast Members: "+getCastMemberNamesAsString()+" ]";
   return String.format(movie,movieName);
}

// returns true if this movie is equal to o

public boolean equals(Object o)

{

// check if o is an instance of Movie

if (o instanceof Movie)

{

Movie other = (Movie) o;

// returns true if all the fields are equal

return ((movieName.equalsIgnoreCase(other.movieName)) && (isKidFriendly == other.isKidFriendly)

&&

(numMinutes == other.numMinutes) && (numCastMembers == other.numCastMembers)

&&

(doArraysMatch(castMembers, other.castMembers)));

}

return false; // movies are not equal or o is not an object of Movie

}
public static void main(String args[]) { //This is the added main method
}
{

//change the code according to your requiredment

}

}