Java - Search for files in a directory

Question

This is supposed to be simple, but I can\'t get it - \"Write a program that searches for a particular file name in a given directory.\" I\'ve found a few examples of a hardc

Answer 1

With **Java 8* there is an alternative that use streams and lambdas:

public static void recursiveFind(Path path, Consumer c) {
  try (DirectoryStream newDirectoryStream = Files.newDirectoryStream(path)) {
    StreamSupport.stream(newDirectoryStream.spliterator(), false)
                 .peek(p -> {
                   c.accept(p);
                   if (p.toFile()
                        .isDirectory()) {
                     recursiveFind(p, c);
                   }
                 })
                 .collect(Collectors.toList());
  } catch (IOException e) {
    e.printStackTrace();
  }
}

So this will print all the files recursively:

recursiveFind(Paths.get("."), System.out::println);

And this will search for a file:

recursiveFind(Paths.get("."), p -> { 
  if (p.toFile().getName().toString().equals("src")) {
    System.out.println(p);
  }
});