How to find out number of folders in directory using Java

SIMPLE JAVA PROGRAM TO FIND OUT NUMBER OF FOLDERS IN DIRECTORY

CODE :

import java.io.File;

public class NumberOfFileInFolder {

          public static void main(String[] args) {

File f1 = new File("D:/SONGS");

                int count1 = 0;

                for (File file : f1.listFiles()) {

                   if (file.isDirectory()) {

                        count1++;

                   }

               }

               System.out.println("Number of directories: " + count1); // Show number of directory only

}

}