Can you help me write this program using Java? This is for Introduction to Compu

Question

Can you help me write this program using Java? This is for Introduction to Computer Science class and we use Java. The problem I'm having is when I create the array to store the data, I dont know how to isolate the integers to find the scores average. Please keep in mine this is an introductory level class.

This is file "grades.csv". It contains a list of students and their exam grades.:

Arthur Albert,74%
Melissa Hay,72%
William Jones,85%
Rachel Lee,68%
Joshua Planner,75%
Jennifer Ranger,76%
Richard Rock,80%
Jerry Rose,80%
Dorothy Smith,76%
Jon Smith,60%
Lisa Smith,90%
Michael Stone,13%
Josephine Trenton,75%
Franklin Williams,58%

Write a program in Java that reads in the file and computes the average grade for the class and then prints it to the console.

Explanation / Answer

ReadGrades.java

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.text.DecimalFormat;

public class ReadGrades {

  
   public static void main(String[] args) {
       File csvFileName = new File("grades.csv");
       String line = "";
       int count = 0;
       double totalGrade = 0;
       try {
           BufferedReader br = new BufferedReader(new FileReader(csvFileName)) ;
   while ((line = br.readLine()) != null) {
   String[] values = line.split(",");
   double grade = Double.parseDouble(values[1].substring(0, values[1].length()-1));
   totalGrade = totalGrade + grade;
   count++;
   }
   double averageGrade = totalGrade/count;
   DecimalFormat df = new DecimalFormat("0.00");
  
   System.out.println("Average grade is "+df.format(averageGrade));

   } catch (IOException e) {
   e.printStackTrace();
   }

   }

}

Output:

Average grade is 70.14

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