Thread: Simple averaging program using two different classes

This is a simple project that i was using to test my current java knowledge (kinda like revision) and for that i used two classes to make a simple averaging program. i know i0m making it more difficult but like i said i'm testing myself but i come up with an unexpected error. Here's the code:

- 1st Class

import java.util.Scanner;
 
public class Main {
 
	public static int num;
	public static int total = 0;
	public static int average;
 
	public static void main(String args[]) {
		Scanner scanner = new Scanner(System.in);
 
		Secondary secondaryObject = new Secondary();
		secondaryObject.loop(num, total, scanner);
 
                average = total/3;
 
		System.out.println("Average: " + average);
	}
}

- 2nd Class

 import java.util.Scanner;
 
public class Secondary {
	public void loop(int num, int total, Scanner scanner) {
		int counter = 0;
 
		while(counter < 3) {
			num = scanner.nextInt();
			total += num;
			counter++;
		}
	}
}

Now the problem is after inputing the numbers it doesn't give me the average but the value of 0. Althought this is not that big of a deal that just made me want to know why and if you could tell me that would be much appreciated.

doesn't give me the average but the value of 0.

How is the average computed? What variable has the total and what variable the count? What variable is assigned the average?

Is integer math being used: 4/5 = 0 vs floating math: 4/5.0 = 0.8

the difference between integer math and floating math.

An example: integer math: 4/5 = 0 vs floating math: 4/5.0 = 0.8