ChildPaths

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

public class ChildPaths {
  public static void main(String[] args) {
    Path dir = Paths.get(args[0]);
    try (DirectoryStream<Path> dirs = Files.newDirectoryStream(dir)) {
      for (Path path: dirs) {
        if (Files.isRegularFile(path)) {
          System.out.println(path);
        }
      }
    }
    catch (Exception e) {
    }
  }
}