Thread: why does this code print 0.0 for the value and "F" as the letter grade?

why is it that when i run this it outputs "0.0" and "F" every time?

import java.util.Scanner;
 
public class GradeTest
{
public static void main (String[] args)
{
Scanner in = new Scanner(System.in);
String reply = "yes";
while (reply.equalsIgnoreCase("yes") || reply.equalsIgnoreCase("y"))
{
if (reply.equalsIgnoreCase("no") || reply.equalsIgnoreCase("n"))
System.exit(0);
System.out.println("Enter a number grade 0-4: ");
double grade = in.nextDouble();
Grade g = new Grade(grade);
System.out.println(g.getNumberGrade() + g.getLetterGrade());
System.out.println("Do you want to run again? ");
reply = in.next();
}
}
}
 
/*
* this class will give you your GPA
*/
public class Grade
{
private double numberGrade;
/*
* constructor that receives a value
* @param value the variable of the user input
*/
public Grade(double value)
{
value = numberGrade;
}
 
//method to return the number grade
public double getNumberGrade()
{
return numberGrade;
}
 
/*
* this method, getLetterGrade() returns the
* actual description in a string
*/
public String getLetterGrade()
{
String letterGrade = ""; //variable to hold the grade notation
String plusOrMinus = ""; //the + or - sign variable
 
//the order matters in the if statement that decides the letter
if (numberGrade > 4.0)
letterGrade = "Off the charts";
else if (numberGrade >= 3.5)
letterGrade = "A";
else if (numberGrade >= 2.5)
letterGrade = "B";
else if (numberGrade >= 1.5)
letterGrade = "C";
else if (numberGrade >= 0.5)
letterGrade = "D";
else if (numberGrade < 0.5)
letterGrade = "F";
 
//this arithmetic statement gives a double that is 0 <= remainder <= 4
double remainder = numberGrade - (int) numberGrade;
if ((0.5 <= remainder && 0.85 <= remainder))
plusOrMinus = "-";
else if ((0.15 <= remainder && 0.5 <= remainder))
plusOrMinus = "+";
 
return letterGrade + plusOrMinus;
}
}