Question

Write the following in Java

Design an enum called Rating, it has the following names: bad, okay, good, better, best

Design a class called Review (reviews might be for a restaurant, movie, etc), it has two attributes: a Rating type called rating, a String type called comment.

Design getters and setters for the attributes.

Override the toString() method to display both the rating and the comment.

Answer 1

For this, we create an enum Rating and put the given values in it.

Then in class Review, we create a rating variable of type Rating and comment variable of type string.

The using setter methods for each, we assign the values for both.

Then using getter methods we can retrieve their respective values .

Then we override the toString() method to return these values as string in order to print them.

In main() method, we create object for Review class and assign rating and comment here and pass them to respective setter methods.

And finally, print the object.

CODE:

import java.util.Scanner;

enum Rating //defining Rating enum
{
bad, okay, good, better, best;
}

class Review{
Rating rating;
String comment;
  
public void setRating(Rating rt){
this.rating = rt;
}
  
public void setComment(String rv){
this.comment = rv;
}
  
public Rating getRating(){
return rating;
}
  
public String getComment(){
return comment;
}
  
public String toString(){ //overriding toString() here
return getRating().toString()+":\t"+getComment(); //returning after converting to String
}
}

public class Main
{
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       Rating rtg = null; //initializing rating as null
       Review rvw = new Review();
       System.out.println("Chose the rating for the restaurant food:\n1.bad \n2.okay\n3.good\n4.better\n5.best");
       int choice = sc.nextInt();
      
       switch(choice){ //assigning rating to
       case 1: rtg = Rating.bad;
       break;
       case 2: rtg = Rating.okay;
       break;
       case 3: rtg = Rating.good;
       break;
       case 4: rtg = Rating.better;
       break;
       case 5: rtg = Rating.best;
       break;
      
       }
       rvw.setRating(rtg); //setting the rating
           System.out.print("Write a short comment: ");
           sc.skip("[\r\n]+"); //getting rid of new line character
           String str = sc.nextLine();
           rvw.setComment(str); //seeting review
           System.out.println("Rating \tComment");
       System.out.println(rvw); //priting the rating and review
   }
}

OUTPUT:

input Chose the rating for the restaurant food: 1.bad 2.okay 3.good 4.better 5.best 3 Write a short comment: Liked the food. Could be better. Rating Comment good: Liked the food. Could be better. ... Program finished with exit code 0 Press ENTER to exit console.