Thread: Student Grading

So i am having trouble with this program. When i run it in the terminal, it asks for the student mark and the number of assesments but doesn't actually output anything. I have a feeling i'm not outputting something but i can't see where, I don't think it is the validate Input part as i did it exactly the same way as i did with my previous program and that worked perfectly.

import io.*;
public class studentGrades
{
public static void main( String [] args)
 {
 double studMark, numAsses, finalMark;
 String grade = "";
 
 studMark = ConsoleInput.readDouble("Enter the Student's Mark");
 numAsses = ConsoleInput.readDouble("Enter the number of Assesments completed");
 finalMark = Math.floor(studMark);
 
  if ( validInput(studMark, numAsses))
  {
   grade = calcCase ( studMark, numAsses, finalMark);
  }
  new String("The student's grade is " + grade);
  System.exit(0);
 }
private static boolean validInput( double studMark, double numAsses)
 {
 boolean isValid;
 isValid = true;
 
  if ( studMark < 0.0 || studMark > 100.0)
  {
   isValid = false;
   System.out.println("Student mark must be between 0 and 100");
  }
  if ( numAsses < 0.0 || numAsses > 5.0)
  {
   isValid = false;
   System.out.println("Number of Assesments must be between 0 and 5");
  }
 return isValid;
 }
private static String calcCase ( double studMark, double numAsses, double finalMark)
 {
  String finalGrade = "";
 switch ( (int)numAsses)
  {
  case 0:
         finalGrade = new String("DNA");
  break;
  case 1: case 2: case 3: case 4:
           if (studMark < 50.0)
           {
                finalGrade = new String("DNC- " + studMark);
           }
  break;
  case 5:
          if (studMark < 50.0)
           {
                finalGrade = new String("F- " + studMark);
           }
          else
           {
                finalGrade = new String(finalMark + "-" + studMark);
           }
  break;
  }
  return finalGrade;
 }
}

Question:studentgrades.JPG

Thanks in Advance

Do you happen to have a link to one?
I've been searching for a good 20 minutes now and can only find similar programs but not one like this. I'll keep searching i suppose!