Question

Homework Assignment 4 Instructions: Class name must be: HW4_yourName For example: Michael will name the class of homework assignment 4 as HW4_Michael Grading Rubric: Code running and as per the required conditions and giving expected output = 10 points File named as per instructions = 1 point Comments in code = 4 points Problem: Average calculation for a list Write a program that reads a text file named test_scores.txt to read the name of the student and his/her scores for 3 tests. The program should display class average for first test (average of scores of test 1) and average (average of 3 tests) for each student. Expected Output: ['John', '25', '26', '27'] ['Michael', '24', '28', '29'] ['Adelle', '23', '24', '20'] [['John', '25', '26', '27'], ['Michael', '24', '28', '29'], ['Adelle', '23', '24', '20']] Class average for test 1 is: 24.0 Average for student John is 26.00 Average for student Michael is 27.00 Average for student Adelle is 22.33

Answer 1

Note : I saved text file in D drive , you gave to specify the right path for the text file in your PC.

I have used comments so that you can get , full marks

import java.util.*;

import java.io.*;

public class HW4_yourName {

    public static void main(String args[]){

         

        //Getting file from local drive

        File scores = new File("D:\\test_scores.txt");

        FileReader f = new FileReader(scores);

        BufferedReader br = new BufferedReader(f);

        String line;

        String[] test_scores;

        // This while loop reads each line as a string, then split string into words to get test score details

        ArrayList<String> list = new ArrayList<>();

        int test1 =0,test2=0,test3=0;

        int total_students = 0;

        while((line = br.readLine()) != null){

            //Splitting each line in file into words

            test_scores = line.split(" ");

            //storing marks of each test in a varibale for average

            test1 += Integer.parseInt(test_scores[1]);    

            float average = (tInteger.parseInt(est_scores[1])+Integer.parseInt(test_scores[2])+ Integer.parseInt(test_scores[3]))/3 ;

            // storing the string into the list for final printing

            list.add("Average of Student "+test_scores[0] +  "is" + average );

            total_students+=1;

        }

        System.out.println("Class average for test1 is "+test1/total_students);

        //Printing marks for each student

        for(String s: list){

            System.out.println(s);

        }

    }

    

}

HOPE i helped YOU.

Happy Learning.