Output?

public class App {
    public static void main(String[] args) {
        int[][] a = new int[][] {{1, 2},{3, 4, 5},{0}};
        modifyArray(a);

        for (int i = 0; i < a.length; i++) {
            for (int j = 0; j < a[i].length; j++) {
                System.out.print(a[i][j] + " ");
            }
            System.out.println();
        }
    }

    public static void modifyArray(int[][] a) {
        for (int i = 0; i < a.length; i++) {
            for (int j = 0; j < a[i].length; j++) {
                a[i][j] *= 2;
            }
        }
    }
}