Java二维输出矩阵

Question

我希望你帮助我，这是我的代码:

public static void main(String[]args)
{
        Scanner input = new Scanner(System.in);

        System.out.print("Type your text: ");
        String text = input.nextLine();

        int counter = text.length();
        if(text.length()> 16)
        {
            System.out.println("Error: input text is greater than 16 characters");
            System.exit(0);
        }
        else
        {
            while(counter < 16)
            {
                text = text.concat("x");
                counter++;
            }

            char[][] k = new char[4][4];

            //int push = 0;

                                int push;

                                for (int i = 0; i < k.length; i++) {
                                    push = i;
                                    for (int j = 0; j < k[i].length; j++) {
                                        k[i][j] = text.charAt(push);
                                        System.out.print(k[i][j] + " ");
                                        push = push + 4;
                                    }
                                    System.out.println();                
                                }
        }

}

现在，当我输入: abcdefghijklmn 时，输出为:

a e i m
b f j n
c g k x
d h l x

这很完美，当我打印时它看起来像矩阵。但现在我必须以其他方式打印:

aeim, bfjn, cgkx, dhlx

不是矩阵，而是行内(带逗号)

Answer 1

只需将 System.out.println(); 替换为 System.out.print(", ");