Mine

import java.io.*;public class ListDirs {	public static void ListDirectories(String path) {		File thisPath = new File(path);		File[] fileList = thisPath.listFiles();		for(int i = 0; i < fileList.length; i++) {			if (fileList[i].isDirectory() ) {				System.out.println("Dir :" + fileList[i].getName() );				ListDirectories(path + fileList[i].getName());			}// if						} // for			}	public static void main(String args[]) {		System.out.println("Hello world");		ListDirectories("C:\\");	}}