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Irina-Kira [14]
2 years ago
6

Write the addReview method, which adds a single product review, represented by a ProductReview object, to the ReviewCollector ob

ject. The addReview method does the following when it adds a product review. The ProductReview object is added to the reviewList instance variable. The product name from the ProductReview object is added to the productList instance variable if the product name is not already found in productList. Elements may be added to reviewList and productList in any order. Complete method addReview. /** Adds a new review to the collection of reviews, as described in part (a) */ public void addReview( ProductReview prodReview )
Computers and Technology
1 answer:
Allisa [31]2 years ago
6 0

Answer:

{

private String name;

private String review;

/** Constructs a ProductReview object and initializes the instance variables. */

public ProductReview(String pName, String pReview)

{

name = pName;

review = pReview;

}

/** Returns the name of the product. */

public String getName()

{ return name; }

/** Returns the review of the product. */

public String getReview()

{ return review; }

}

The ReviewCollector class, shown below, is used to represent a collection of reviews to be analyzed.

public class ReviewCollector

{

private ArrayList<ProductReview> reviewList;

private ArrayList<String> productList;

/** Constructs a ReviewCollector object and initializes the instance variables. */

public ReviewCollector()

{

reviewList = new ArrayList<ProductReview>();

productList = new ArrayList<String>();

}

/** Adds a new review to the collection of reviews, as described in part (a). */

public void addReview(ProductReview prodReview)

{ /* to be implemented in part (a) */ }

/** Returns the number of good reviews for a given product name, as described in part (b). */

public int getNumGoodReviews(String prodName)

{ /* to be implemented in part (b) */ }

// There may be instance variables, constructors, and methods not shown.

}

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Cardinality ratios often dictate the detailed design of a database. The cardinality ratio depends on the real-world meaning of t
Otrada [13]

Solution :

ENTITY 1               CARDINALITY RATIO                                     ENTITY 2

1. Student                        1 to many                                     Social security card

                      A student may have more than one          

                     social security card (legally with the

                      same unique social security number),

                     and every social security number belongs

                   to a unique.

2. Student                   Many to Many                                    Teacher

                    Generally students are taught by many

                    teachers and a teacher teaches many students.

3.ClassRoom               Many to Many                                   Wall

                      Do not forget that the wall is usually

                      shared by adjacent rooms.

4. Country                 1 to 1                                             Current President

                       Assuming a normal country under normal

                       circumstances having one president at a

                      time.

5. Course               Many to Many                               TextBook

                        A course may have many textbooks and

                       text book may be prescribed for different

                      courses.

6. Item                             Many to Many                           Order

                        Assuming the same item can appear

                         in different orders.

7. Student                       Many to Many                          Class

                        One student may take several classes.

                        Every class usually has several students.

8. Class                                 Many to 1                             Instructor

                       Assuming that every class has a unique

                        instructor. In case instructors were allowed

                        to team teach, this will be many-many.

9. Instructor                  1 to 1                                             Office

                       Assuming every instructor has only one

                      office and it is not shared. In case of offices

                     shared by 2 instructors, the relationship

                    will be 2-1. Conversely, if any instructor has a joint

                    appointment and offices in both departments,

                    then the relationship will be 1-2. In a very general

                  case, it may be many-many.

10. E-bay Auction item             1-Many                           E-bay bid

                        1 item has many bids and a bid is unique

                        to an item.

7 0
2 years ago
Write a flowchart and C code for a program that does the following: Within main(), it asks for the user's annual income. Within
Fiesta28 [93]

Answer:

I am writing a C program:

#include <stdio.h> //to use input output functions

void printIt(double annual_in){ //function printIt

   if(annual_in >90000) //check if the income is greater than 90000

   printf("Congratulations. Doing great!"); //print this message if income value is greater than 90000

   else //if annual income is less than 90000

   printf("You WILL make $50,000, if you keep going"); } //print this message if income value is less than 90000

int main() //start of main() funciton body  

{   double income; //declares a double type variable income to hold annual income value

   printf("Enter annual income: "); //prompts user to enter annual income

   scanf("%lf",&income); //reads income value from user

   printIt(income); } // calls printIt method by passing input income to that function

     

Explanation:

The program is well explained in the comments mentioned with each statement of the program. The flowchart is attached.

First flowchart flow1 has a separate main program flowchart which reads the income and calls printIt function. A second flowchart is of prinIt() method that checks the input income passed by main function and displays the corresponding messages and return.

The second flowchart flow2 is the simple flowchart that simply gives functional description of the C program as flowchart is not where giving function definitions is important. Instead of defining the function printIt separately for this C program, a high-level representation of functional aspects of this program is described in second flowchart while not getting into implementation details.

7 0
2 years ago
Chinh wants to have a program print, "Sorry, but that isn’t one of your options" until the user enters the correct information.
kolbaska11 [484]

Answer:

a wile loop

Explanation:

8 0
2 years ago
Write a full class definition for a class named Averager, and containing the following members:______An data member named sum of
alina1380 [7]

Answer:

  1. public class Averager {
  2.    private int sum;
  3.    private int count;
  4.    public Averager(int sum, int count) {
  5.        this.sum = 0;
  6.        this.count = 0;
  7.    }
  8.    public int getSum(){
  9.        return sum;
  10.    }
  11.    public void add( int num){
  12.        this.sum+=num;
  13.        this.count++;
  14.    }
  15.    public int getCount(){
  16.        return this.count;
  17.    }
  18.    public double getAverage(){
  19.        double ave = (int)this.sum/this.count;
  20.        return  ave;
  21.    }
  22. }

Explanation:

  • Lines 1-3 contains the class declaration and the member (data fields)
  • Lines 4-7 is the constructor that initializes the fields to 0
  • Lines 8-10 is the method that returns the value of sum getSum()
  • lines 11-14 iss the method add() that adds a number to the member field sum and increases count by 1
  • lines 15 - 17 is the method that returns total count getCount()
  • Lines 18-21 is the method getAverage() That computes the average and returns a double representing the average values

6 0
2 years ago
Read 2 more answers
If you were teaching a fellow student to use software for the first time and the software had many built-in hotkeys, would you f
Liula [17]

Answer:

Hotkey commands

Explanation:

It would be easier and more efficient in the long run to use hotkeys.

5 0
2 years ago
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