In Java Write a program that reads a text file that contains

In Java:

Write a program that reads a text file that contains a grade (for instance, 87) on each line. Calculate and print the average of the grades.

Solution

import java.io.BufferedReader;
import java.io.FileReader; // importing filereader
import java.io.IOException; // importing file io exceptions

public class grade {

   public static void main(String[] args) {

       BufferedReader br = null;
       double count=0;
       int noOfgrades=0;

       try {

           String sLine;
      
           br = new BufferedReader(new FileReader(\"sample.txt\")); // reading file using buffer reader

           while ((sLine = br.readLine()) != null) { // rading line by line
                   noOfgrades=noOfgrades+1; // getting number of grades
                   int num=Integer.parseInt(sLine); // convert string into integer
                   count=count+num; // adding each grade to count
           }
           System.out.println(\"count:\\t\"+count);
           System.out.println(\"noOfgrades:\\t\"+noOfgrades);
           System.out.println(\"Average of the grades:\\t\"+(count/noOfgrades));
          

       } catch (IOException e) {
           e.printStackTrace(); // catch exception
       } finally {
           try {
               if (br != null)br.close(); // closing buffer
           } catch (IOException ex) {
               ex.printStackTrace();// printing exceptions
           }
       }

   }
}

/********** out file******
fileName:sample.txt
file contains \"
23
34
56
7
88
89
52
34
65
\"
*/
/************output*************
count: 448.0
noOfgrades: 9
Average of the grades: 49.77

*/