How to create multiple directories and traverse recursively ?

Make one directory

File file = new File("C:\\Directory1");

boolean isCreated = file.mkdir();

Make multiple directories recursively

File files = new File("C:\\Directory2\\Sub2\\Sub3");

boolean isCreated = files.mkdirs();

Traversing a directory structure in Java

displayIt(new File("C:\\Downloads")); 

public static void displayIt(File node){

  System.out.println(node.getAbsoluteFile());

  if(node.isDirectory()) {

    String[] subNote = node.list();

    for(String filename : subNote){

      displayIt(new File(node, filename));

    }

  }

}