Floyd's Triangle

import javax.swing.JFrame;
import javax.swing.JOptionPane;


public class FloydsTriangle {

    public static void main(String[] args) {

        int noOfRows = 0;

        int theNumber = 0;

        JFrame frame = new JFrame("Floyd's Triangle!");


        String rows = JOptionPane.showInputDialog(frame, "Input the number of row/s for the Floyd's Triangle");

            if(!rows.isEmpty() ){

                noOfRows = Integer.valueOf(rows);

            }


        String number = JOptionPane.showInputDialog(frame, "Input the number 'n' for the Floyd's Triangle");

            if(!number.isEmpty() ){

                theNumber = Integer.valueOf(number);

            }


        System.out.printf("The no. of row/s are '%d'.\n", noOfRows);

        System.out.printf("The number 'n' is '%d'.\n", theNumber);


        int start = 1;

        for (int i = 1; i <= noOfRows ; i++) {

            for (int j = 1; j <=i ; j++) {
                System.out.print("("+ start + "*" + theNumber + ")" + " ");
                start++;
            }

            System.out.println();
        }

        System.exit(0);

    }


}