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Java I/O - 如何創(chuàng)建目錄過濾器

我們想知道如何創(chuàng)建目錄過濾器。 
import java.io.IOException;
import java.nio.file.DirectoryIteratorException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class Main {
  public static void main(String[] args) {
    DirectoryStream.Filter<Path> filter = new DirectoryStream.Filter<Path>() {
      public boolean accept(Path file) throws IOException {
        return (Files.isHidden(file));
      }
    };
    Path directory = Paths.get("C:/Windows");
    try (DirectoryStream<Path> directoryStream = Files.newDirectoryStream(directory, filter)) {
      for (Path file : directoryStream) {
        System.out.println(file.getFileName());
      }
    } catch (IOException | DirectoryIteratorException ex) {
      ex.printStackTrace();
    }
  }
}