Java FileVisitor interface
import java.io.IOException; import java.nio.file.FileSystem; import java.nio.file.FileSystems; import java.nio.file.FileVisitResult; import java.nio.file.FileVisitor; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.SimpleFileVisitor; import java.nio.file.attribute.BasicFileAttributes; public class Main { public static void main(String args[]) { FileVisitor<Path> myFileVisitor = new SimpleFileVisitor<Path>() { @Override//from w ww.j a v a2 s . co m public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException { System.out.println("Visited File: " + file.toString()); return FileVisitResult.CONTINUE; } }; FileSystem fileSystem = FileSystems.getDefault(); Path directory = fileSystem.getPath("."); try { Files.walkFileTree(directory, myFileVisitor); } catch (IOException e) { e.printStackTrace(); } } }