Create Butterfly Pattern Program in java

Write a java program to print butterfly pattern where number of rows is given by user.

         *           *
         **        **    
         ***     ***     
         **** ****       
         ***     ***      
         **        **     
        *             *  

import java.util.Scanner;
public class StarPattern4
{
  public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter the number of rows needed to print the pattern ");
        int rows = scanner.nextInt();
        System.out.println(" Printing the pattern ");
       
        for (int i=1; i<=rows; i++)
        {
            for (int j = 1; j <= i; j++)
            {
                System.out.print("*");
            }
            for (int k = i*2; k <= rows*2-1; k++)
            {
                System.out.print(" ");
            }
            for (int l = 1; l <= i; l++)
            {
                System.out.print("*");
            }
            System.out.println();
        }
       
        for (int i=1; i<=rows-1; i++)
        {
            for (int j = rows-1; j >= i; j--)
            {
                System.out.print("*");
            }
            for (int k = 1; k <= i*2; k++)
            {
                System.out.print(" ");
            }
            for (int l = rows-1; l >= i; l--)
            {
                System.out.print("*");
            }
           
            System.out.println();
        }
        scanner.close();
    }
}