Alil help plz thanks :)

Question

ok so im trying to get my program to read a txt doc with something like
Alfred 90 74 60 100 80 75 95.0
Bea 60 82 66 59 92 72 74
Leila 100 98 90 100 82 85 95
Fred 65 75 75 70 82 66 50
Anna 50 76 30 33 90 74 56
Ada 10 89 76 90 90 90 90
Hermud 100 95 95 100 75 85 78
Jimmy 70 65 80 55 66 77 89
Cecil 53 67 34 78 38 47 90
Smiley 10 10 30 17 50 56 00
and i want it to print off something like
Alfred: 79.8
Bea: 71.3
Leila: 93.8
Fred: 69.8
Anna: 56.5
Ada: 71.0
Hermud: 91.8
Jimmy: 71.7
Cecil: 56.1
Smiley: 22.299999999999997
import java.io.File;
import java.io.FileNotFoundException;
import java.util.NoSuchElementException;
import java.util.Scanner;
public class practice{
        // method reads a String from a file opened using Scanner
     public static String readString(Scanner scan) throws NoSuchElementException {
      return scan.next();     
    // method reads a Double from a file opened using Scanner
     public static Double readDouble(Scanner scan) throws NoSuchElementException {
      return scan.nextDouble();     
      * @param filename and number (count of lines in file)
      * @throws FileNotFoundException
      * read name then 7 scores
      * first three scores weighted by .2, last four by .1
     public static void main(String[] args) throws FileNotFoundException {
         // access the args and make them available to method
          String inputFileName = args[0];
          int numberOfStudents = Integer.parseInt(args[1]);
          // check that the args were properly read
          boolean debug = true;
          if (debug) {
               System.out.println("Input file: " + inputFileName);
             System.out.println("Number of students:" + numberOfStudents);
          // open a file and set it up to be read
          Scanner scan = new Scanner( new File (inputFileName));     It seems to be having troubles when i create the txt document and run that txt document as an arg

Answer 1

oh sorry my bad its bringing up
Exception in thread "main"
java.lang.ArrayIndexOutOfBoundsException: 1
     at ComputeGrades.main(ComputeGrades.java:27)
and i dont really know how to get started on
calculating the individual scoresIt looks like the program is expecting 2 arguments to be passed into main, and only one is.
if(args.length < 2)
     System.out.println("Proper Usage is : java ComputeGrades <filename> <numberOfRecordsinFile>");
     System.exit(0);
}