Display matrix of 0s and 1s

The problem

Write a method that displays an n-by-n matrix using the following header: public static void printMatrix(int n). Each element is 0 or 1, which is generated randomly. Write a test program that prompts the user to enter n and displays an n-by-n matrix.

Breaking it down

public static void main(String[] args) {

    Scanner input = new Scanner(System.in);
    System.out.print("Enter a integer for n-by-n matrix: ");
    int num = input.nextInt();

    input.close();

    printMatrix(num);
}

public static void printMatrix(int n) {

    for (int column = 0; column < n; column++) {
        for (int row = 0; row < n; row++) {
            System.out.printf("%1d ", (int) (Math.random() * 2));
        }
        System.out.println("");
    }
}

Output

Enter a integer for n-by-n matrix: 10
0 0 1 0 0 1 0 0 1 1 
1 0 0 0 1 0 0 1 1 0 
0 0 1 0 1 1 0 0 0 1 
1 0 0 0 0 0 0 1 1 1 
0 1 1 1 1 0 1 0 1 0 
0 0 0 0 1 0 0 1 1 0 
1 1 0 0 1 1 1 1 1 0 
0 1 1 0 1 0 0 1 0 1 
1 0 1 0 1 1 0 1 1 1 
1 1 1 1 0 0 0 0 1 1