Java-X-Y, X-Z ve Y-Z

import java.util.Scanner;

public class ana {

        public static void main(String[] args) {
                // TODO Auto-generated method stub
                int x;
                int y;
                int z;
                int xy;
                int xz;
                int yz;
                int ortalama;
                // X-Y, X-Z ve Y-Z
                Scanner klavye = new Scanner(System.in);

                System.out.print("X'i girin: ");
                x = klavye.nextInt();

                System.out.print("Y'i girin: ");
                y = klavye.nextInt();

                System.out.print("Z'i girin: ");
                z = klavye.nextInt();

                xy = (x - y);
                xz = (x - z);
                yz = (y - z);
                ortalama = (xy + xz + yz) / 3;

                System.out.println("xy: " + xy);
                System.out.println("xz: " + xz);
                System.out.println("yz: " + yz);

                System.out.println("ortalama: " + ortalama);

        }
}