Design a TestScores class that has fields to hold three test scores. The class s

Question

Design a TestScores class that has fields to hold three test scores. The class should have a constructor, accessor and mutator methods for the test score fields, and a method that returns the average of the test scores. Demonstrate the class by writing a separate program that creates an instance of the TestScores class. The program should ask the user to enter three test scores, which are stored in the TestScores object. Then the program should display the average of the scores, as reported by the TestScores object.

Explanation / Answer

//TestScores.java

public class TestScores {

   //Scores Attributes
   int score1,score2,score3;
  
   //Constructor
   public TestScores(int score1,int score2,int score3){
       this.score1 = score1;
       this.score2 = score2;
       this.score3 = score3;
   }
  
   //Accessors and Mutators
   public int getScore1() {
       return score1;
   }

   public void setScore1(int score1) {
       this.score1 = score1;
   }

   public int getScore2() {
       return score2;
   }

   public void setScore2(int score2) {
       this.score2 = score2;
   }

   public int getScore3() {
       return score3;
   }

   public void setScore3(int score3) {
       this.score3 = score3;
   }

   //Method to calculate average of test scores
   public double averageTestScores(){
       //Return Average of test score
       double total = this.getScore1()+this.getScore2()+this.getScore3();
       return total/3;
   }
  
}

//TestScoresMain.java

import java.util.Scanner;

public class TestScoresMain {

   public static void main(String[] args) {
       //Scanner for reading input
       Scanner s = new Scanner(System.in);
       System.out.println("Enter three scores:");
       System.out.println("*******************");
      
       //Reading Test score-1,2,3
       System.out.println("Enter Test Score-1");
       int score1 = s.nextInt();
      
       System.out.println("Enter Test Score-2");
       int score2 = s.nextInt();
      
       System.out.println("Enter Test Score-3");
       int score3 = s.nextInt();
      
      
       //Creating TestScores instance
       TestScores ts = new TestScores(score1,score2,score3);
       //Printing Test Scores
       System.out.println("Score-1:"+ts.getScore1()+",Score-2:"+ts.getScore2()+",Score-3:"+ts.getScore3());
       //Calling averageTestScores method
       double average = ts.averageTestScores();
       //Printing Average
       System.out.println("The average of Test Scores is:"+average);
      

   }

}

Output:

javac TestScoresMain.java
java TestScoresMain

Enter three scores:
*******************
Enter Test Score-1
78
Enter Test Score-2
56
Enter Test Score-3
87
Score-1:78,Score-2:56,Score-3:87
The average of Test Scores is:73.66666666666667

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