PROG1: determinant berekenen v 2x2 matrix

/*
 * KK    KK  JJJJJJJJJJ  BBBBBBBB
 * KK  KK            JJ  BB      BB
 * KKKK              JJ  BBBBBBBB
 * KK  KK    JJ      JJ  BB      BB
 * KK    KK    JJJJJJ    BBBBBBBBBB
 *
 * Copyright 2018 Jordy Van Kerkvoorde
 */
package h7;

import java.util.Scanner;

/**
 *
 * @author KeeJayBe
 */
public class Matrix {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int[][] matrix = new int[2][2];
        for(int i=0 ; i<=1; i++){
            for(int j=0; j<=1; j++){
            System.out.println("Geef een getal voor de rij" + (i + 1) +  "kolom " + (j+1) +": ");
            int get = s.nextInt();
            matrix[i][j] = get;
            }
        }

        int det = (matrix[0][0] * matrix [1][1]) - (matrix[0][1] * matrix[1][0]);
        System.out.println("De determinant is: " + det);
    }

}