How to check if a directory is empty ?

Get the listing of directory and check its length to know if directory is empty

Example

File file = new File("C:\\folder");

if (file.isDirectory()) {

  if(file.list().length > 0) {

    System.out.println("Directory is not empty !");

  } else {

    System.out.println("Directory is empty !");

  }

} else {

  System.out.println("This is not a directory");

}