Listing and filtering directory content

DirectoryFilterTest.java

import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class DirectoryFilterTest {

  public static void main(String[] args) {
    Path basePath = Paths.get("D:/tests");

    // Listing the files in the directory
    System.out.println("All files:");
    try (DirectoryStream<Path> pathList = Files.newDirectoryStream(basePath)) {
      for (Path path : pathList) {
        System.out.println(path.toString());
      }

    } catch (IOException e) {

      e.printStackTrace();
    }

    // Applying filter using GLOB pattern
    System.out.println("All text files[Using Glob pattern]:");
    try (DirectoryStream<Path> pathList = Files.newDirectoryStream(basePath,
        "*.txt")) {
      for (Path path : pathList) {
        System.out.println(path.toString());
      }

    } catch (IOException e) {

      e.printStackTrace();
    }

    // Using DirectoryStream.Filter class
    System.out.println("All document files[Using Filter class]");
    DirectoryStream.Filter<Path> documentFilter = new DirectoryStream.Filter<Path>() {

      @Override
      public boolean accept(Path entry) throws IOException {
        String fileName = entry.getFileName().toString();
        return fileName != null && fileName.endsWith("txt");
      }

    };
    try (DirectoryStream<Path> pathList = Files.newDirectoryStream(basePath,
        documentFilter)) {
      for (Path path : pathList) {
        System.out.println(path.toString());
      }

    } catch (IOException e) {

      e.printStackTrace();
    }

  }
}