Feedback rating calculator

Question

To calculate all the reviews given by the customer for a product and set the product rate

Answer 1

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Answer 2

/**
* This program reads a file of movie ratings and
* calculates the average rating for each using
* a Hashmap. The hashmap uses the movie name as
* the key and the item is an object that stores
* the total ratings and number of ratings.
*/
import java.util.HashMap;
import java.util.Set;
import java.util.Scanner;
import java.util.StringTokenizer;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

class RatingStats
{
private int numRatings, sumRatings;

public RatingStats ().
{
numRatings = 0;
sumRatings = 0;
}

public int getNumRatings ()
{
return numRatings;
}

public int getSumRatings ()
{
return sumRatings;
}

public void addRating (int rating)
{
numRatings ++;
sumRatings + = rating;
public public class Question
public static void main (String [] args)
{
// The ratings HashMap maps from a movie name
// to a RatingStats object
HashMap< String, Ratingstats> ratings
new HashMap< String, Rating

Answer 3

/**
* This program reads a file of movie ratings and
* calculates the average rating for each using
* a Hashmap. The hashmap uses the movie name as
* the key and the item is an object that stores
* the total ratings and number of ratings.
*/
import java.util.HashMap;
import java.util.Set;
import java.util.Scanner;
import java.util.StringTokenizer;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

class RatingStats
{
private int numRatings, sumRatings;

public RatingStats ().
{
numRatings = 0;
sumRatings = 0;
}

public int getNumRatings ()
{
return numRatings;
}

public int getSumRatings ()
{
return sumRatings;
}

public void addRating (int rating)
{
numRatings ++;
sumRatings + = rating;
public public class Question
public static void main (String [] args)
{
// The ratings HashMap maps from a movie name
// to a RatingStats object
HashMap< String, Ratingstats> ratings
new HashMap< String, Rating