RosettaCodeData/Task/Walk-a-directory-Recursively/Java/walk-a-directory-recursively-3.java

import java.io.IOException;
import java.nio.file.*;

public class WalkTree {
   public static void main(String[] args) throws IOException {
      Path start = FileSystems.getDefault().getPath("/path/to/file");
      Files.walk(start)
           .filter( path -> path.toFile().isFile())
           .filter( path -> path.toString().endsWith(".mp3"))
           .forEach( System.out::println );
   }
}