DirectoryList.java

package com.godoro.nio.walk;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class DirectoryList {

  public static void main(String[] args) {
    String root = ".";
    try ( Stream<Path> walk = Files.walk(Paths.get(root))) {

      List<String> result = walk
              .filter(Files::isDirectory)
              .map(x -> x.toString())
              .collect(Collectors.toList());

      result.forEach(System.out::println);

    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}