How to traverse the directories using Java

This program explains how to traverse the directories and sub directories using Java
DirectoryTraversal.java

package com.javatutorialcorner.directory;

import java.io.File;

public class DirectoryTraversal {
  
    public static void traverseDirectory(File directory) {
       System.out.println(directory);
       if (directory.isDirectory()) {
          String[] subDirectory = directory.list();
          
          for (int i = 0; i < subDirectory.length; i++) {
             traverseDirectory(new File(directory, subDirectory[i])); 
          } 
       } 
    }
    
    public static void main(String[] argv) throws Exception { 
        System.out.println("Directory traversed : ");
        File directory = new File("C://JTC");
        traverseDirectory(directory);
     }

}

Output