Java I/O - 如何copy使用java.nio.file.Files的目录

import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;

public class Main {

  public static void main(String[] args) throws Exception {
    Path originalDirectory = FileSystems.getDefault().getPath("C:/home/docs");
    Path newDirectory = FileSystems.getDefault().getPath("C:/home/tmp");

    Files.copy(originalDirectory, newDirectory);
    System.out.println("Directory copied successfully!");

  }
}