Write a complete program to get data from file name DATA.TXT one line at a time

Question

Write a complete program to get data from file name DATA.TXT one line at a time until there is no more data in that file. The following is one sample line in DATA.TXT ( have as many record as you wish in DATA.TXT)
Name SSN quiz mid assignments participation final
LISA 111-11-1111 100 100 100 100 100
Jack 222-22-2222 80 80 100 90 100
Note that the first line is no in DATA.txt.
Your program should create a file name RESULT.txt that reports Name, SSN and a letter grade according to the following rules:
Total= %15 quiz + %15 mid +%40assignments + %10 Participation+ %final
If total >= 90 then A else if total>=80 then B….
You can print same output to screen as well as RESULT.txt.

Thank you!

Explanation / Answer

import java.util.*;
import java.io.*;

public class GradeStudents {

    /*
    * Given a number as a parameter, return the corresponding letter grade
    */
    public static String grade(double total) {
        final String [] GRADES = {"A","B","C","D"};
        final int [] CUTOFFS = {90,80,70,60};
        for (int i = 0; i < CUTOFFS.length; i++) {
            if (total > CUTOFFS[i]) return GRADES[i];
        }
        return "E";
    }
   
    public static void main(String[] args) throws Exception {
        final String INFILE = "DATA.TXT";
        final String OUTFILE = "RESULT.TXT";
       
        Scanner sc = new Scanner(new File(INFILE));
        FileWriter fw = new FileWriter(OUTFILE);
        PrintWriter pw = new PrintWriter(fw);
        while (sc.hasNext()) {
            String line = sc.nextLine();
            String [] tokens = line.split("\s+"); // split the line up into the strings separated by whitespace
            String name = tokens[0];
            String ssn = tokens[1];
            double quiz = Double.parseDouble(tokens[2]);
            double mid = Double.parseDouble(tokens[3]);
            double assignments = Double.parseDouble(tokens[4]);
            double participation = Double.parseDouble(tokens[5]);
            double fin = Double.parseDouble(tokens[6]);
            double total = .15*quiz + .15*mid + .40*assignments + .10*participation + .20*fin;
            String outputLine = (name+" "+ssn+" "+grade(total));
            pw.println(outputLine);
            System.out.println(outputLine);
        }
        pw.close();
    }

}

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.