Question

JAVA Question

a)
Read a file named testScoreIn.txt representing test scores for a class of students.
Each record contains an id number and three test scores (Note: the test scores are integers).
For example, a student record might look like:
BK1234 87 72 91

b)
Without using an array, read each student’s information, one record at a time and compute the student’s average (as a double).

c)
Write to an output file, testScoreOut.txt, as a neatly formatted table with column headings, each student's id, three grades and average grade (as a real number to 3 decimal places)

d)
At the end, when the the sentinel ID, "LastID", is read, print to the screen the id number of the student with the highest average.

Answer 1

Code:-

Main.java

import java.io.File;
import java.util.Scanner;
import java.io.FileWriter;
import java.io.IOException;
class Main{

public static void main (String[] args) throws Exception,IOException{

//for reading each line from textScoreIn.txt

File file_in = new File("textScoreIn.txt");
Scanner sc = new Scanner(file_in);

FileWriter fw = new FileWriter("textScoreOut.txt");

String id_1="";

Double avg=Double.valueOf(0);

while (sc.hasNextLine()){

String id=sc.next();

int f = sc.nextInt();

int s = sc.nextInt();

int t = sc.nextInt();

Double average =(Double.valueOf(f)+Double.valueOf(s)+Double.valueOf(t))/3;

if(average>avg){ //To get the maximum average and id

id_1=id;

avg=average;

}

String p=id+" "+String.valueOf(f)+" "+String.valueOf(s)+" "+String.valueOf(t)+" "+Double.toString(average)+"\n";

fw.write(p);

}

sc.close();

fw.close();

  

System.out.println("The Student ID having the highest average is");

System.out.println(id_1);

}

}

Output:-

Screenshot of Code:-

textScoreIn.txt

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