Write a program in Java to display the following pattern:

   1
  31
 531
7531

public class KboatPattern
{
    public static void main(String args[]) {
        for (int i = 1; i <= 7; i += 2) {
            for (int j = 6; j >= i; j -= 2)
                System.out.print(" ");
            for (int k = i; k >= 1; k -= 2)
                System.out.print(k);
            System.out.println();
        }
    }
}