Develop a class-averaging program that processes grades for an arbitrary number of students each time it’s run

import java.util.Scanner;

public class JavaApplication28 {

    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);
        int total=0;
        int gradeCounter=0;
        System.out.print("Enter grade or -1 to quit: ");
        int grade=input.nextInt();
        while(grade != -1)
        {
            total=total+grade;
            gradeCounter=gradeCounter+1;
            System.out.print("Enter grade or -1 to quit: ");
            grade=input.nextInt();
        }
        if(gradeCounter > 0)
        {
            double average=(double)total/gradeCounter;
            System.out.printf("%nTotal of the %d grades entered is %d%n",gradeCounter, total);
            System.out.printf("Class average is %.2f%n",average);
        }
        else
            System.out.println("No grades were entered");
    }
}