Question

When I was writing the code, I got a question that how to customize the space between letters?

Here is my code:

The code: System.out.print(‘\t’); makes the space between letters is one tab.
The output of the follow code is like:

1 ### A ### B ### C ### D
2 ### A ### B ### C ### D
3 ### A ### B ### C ### D
4 ### A ### B ### C ### D
5 ### A ### B ### C ### D
6 ### A ### B ### C ### D
7 ### A ### B ### C ### D

public static void main(String[] args)
{
    char[][] seat = new char[7][5];

    for (int row=0; row<7; row++){
        seat[row][0] = (char)('1' + row);
        }

    for (int row=0; row<7; row++){
        for (int col=1; col<5; col++){
            seat[row][col] = (char)('A'+ col-1);
        }
    }

    for (int row=0; row<7; row++){
        for (int col=0; col<5; col++){
            System.out.print(seat[row][col]);
            System.out.print('\t');
        }
        System.out.println("");
    }

Answer 1

Try

         ...
    for (int row=0; row<7; row++){
        for (int col=0; col<5; col++){
            System.out.printf("%-8s", seat[row][col]);
        }
        System.out.println("");
    }
         ...

output

1       A       B       C       D       
2       A       B       C       D       
3       A       B       C       D       
4       A       B       C       D       
5       A       B       C       D       
6       A       B       C       D       
7       A       B       C       D       

see java.util.Formatter API to know more about formatting options