Question

I asked a question similar to this one, which was answered perfectly. Another practice problem is now asking me to use two classes and get user input.

For this Java program, you will write two classes: GradeCalculator and GradeCalculatorDriver

In the GradeCalculator class, compute the final average and letter grade for a particular student.

The final average is calculated according to the following rules:

1) There are ten exams scored out of 100 points

2) The lowest exam score is not included in the calculation of the final average

3) The highest exam score is not included in the calculation of the final average

4) An average of 91-100 is an A

5) An average of 81-90 is a B

6) An average of 71-80 is a C

7) An average of 61-70 is a D

8) An average of 0-60 is an E

The GradeCalculator class must include the following methods:

1) A method to compute and return the highest score

2) A method to compute and return the lowest score

3) A method to compute the sum of all the scores

4) A method to compute the final average

5) A method to determine the letter grade

In the GradeCalculatorDriver class, include a main method that asks the user for the student’s name and their ten exam grades, reads the grades, calculates the letter grade and prints it. This process should be repeated until the user enters N.

For example, a run of the program might look something like this:

Welcome to Score Calculator

Want to compute a final average? Y

Please enter the student’s name: Sara Smith

Please enter test scores all on one line separated by one or more spaces.

The final score for Sara Smith is 100.

The letter grade for Sara Smith is A.

Want to compute another final average? N

Answer 1

import java.util.Scanner;
class GradeCalculator{
   int arr2[]=new int[11];
   GradeCalculator(String arr)
   {
       int[] arr1=Integer.parseInt(arr.split(" "));
   }
   int sum=0,sum1=0,sum2=0;
   int high,low;
   float average;
       void highestscore()
       {
           high=arr1[0];
           for(int i=1;i<=10;i++)
           {
               if(arr1[i]>high){
                   high=arr1[i];
               }
           }
       }
       void lowestscore()
       {
           low=arr1[0];
           for(int i=1;i<=10;i++)
           {
               if(arr1[i]<low){
                   low=arr1[i];
               }
           }
       }
       int sumscore()
       {
           for(int i=0;i<10;i++)
               sum=sum+arr1[i];
           return sum;
       }
       float finalaverage()
       {
           average=sum/10;
           return average;
       }
       String lettergrade()
       {
           char letter='a';
           String letter1;
           if(average>91 && average<100){
               letter='A';
           }
           if(average>81 && average<90){
               letter='B';
           }
           if(average>71 && average<80){
               letter='C';
           }
           if(average>61 && average<70){
               letter='D';
           }
           if(average>0 && average<60){
               letter='E';
           }
           letter1=Character.toString(letter);
           return letter1;
       }

}
public class GradeCalculatorDriver{
   public static void main(String args[])
   {
      
       int i;
       System.out.println("Welcome to Score Calculator");
       System.out.println("Want to Compute a final average");
       Scanner in=new Scanner(System.in);
       char s=in.next().charAt(0);
       char s1='Y';
       while(s==s1)
       {
           String letter;
           System.out.println("Enter Student name:");
           String name=in.nextLine();
           System.out.println("Enter test scores all on one line separated by one or more spaces:");
           String arr=in.nextLine();
           GradeCalculator obj=new GradeCalculator(arr);
           int sum=obj.sumscore();
           letter=obj.lettergrade();
           System.out.println("the final score for "+name+"is"+sum);
           System.out.println("the final grade is"+letter);
          
       }
      
   }
}