Problem with looping

[jarredh4]

Hi everyone. I have an assignment for my Programming class due which I have been working on for the past couple of hours. The assignment is to take grades and output the minimum, maximum, and average grades. The minimum and maximum grades are working correctly. However, when taking the average of my grades, the program is ignoring the second grade entered every time. I have posted my code below (the output of sum and number of grades is for myself only and will be removed when I have completed the assignment).

import java.util.Scanner;

public class Grading {

	public static void main(String[] args) {
		Scanner keyboard = new Scanner(System.in);
		double sum = 0;
		int numbergrades = 0;
		System.out.println("Enter a nonnegative integer (negative to stop): ");
		int grade = keyboard.nextInt();
		int max = keyboard.nextInt();
		int min = max;

		while (grade >= 0) {
			if (grade > 100) {
				System.out.println("!!! Invalid value.");
			} else if (grade > max) {
				max = grade;
				sum = sum + grade;
				numbergrades = numbergrades + 1;
			} else if (grade < min) {
				min = grade;
				sum = sum + grade;
				numbergrades = numbergrades + 1;
			} else {
				sum = sum + grade;
				numbergrades = numbergrades + 1;
			}
			grade = keyboard.nextInt();
		}

		double average = sum / numbergrades;
		System.out.println(sum);
		System.out.println(numbergrades);
		System.out.println("The highest score is " + max + ".");
		System.out.println("The lowest score is " + min + ".");
		System.out.println("The average of the scores is " + average + ".");

	}

}

Thanks in advance for any help you can give me!

[Junky]

Nothing to do with looping.

int grade = keyboard.nextInt();
int max = keyboard.nextInt();

First value entered is assigned to grade.
Second value entered is assigned to max.

[jarredh4]

Thanks so much! I was focused so much on the loop that I completely overlooked that error.