printing out a 2-D array in Matrix format

Question

How can I print out a simple int [][] in the matrix box format like the format in which we handwrite matrices in. A simple run of loops doesn\'t apparently work. If it helps

Answer 1

    int[][] matrix = {
        {1,2,3},
        {4,5,6},
        {7,8,9}
    };
    //use foreach loop as below to avoid IndexOutOfBoundException
    //need to check matrix != null if implements as a method
    //for each row in the matrix
    for (int[] row : matrix) {
        //for each number in the row
        for (int j : row) {
            System.out.print(j + " ");
        }
        System.out.println("");
    }