Uses of Record Class
org.pwss.util.PWSSDirectoryNavUtil

Retrieving a List of files with no subfolders to the selected folder (static)

import org.pwss.util.PWSSDirectoryNavUtil;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.ExecutionException;

public class Main {

    public static void main(String[] args) throws IOException,
            ExecutionException,
            InterruptedException {
        File selectedFolder =
                new File("C:\\Program Files (x86)\\Battle.net");

        List noSubfolderList = PWSSDirectoryNavUtil
                .GetSelectedFolderWithoutSubFolders(selectedFolder);
        noSubfolderList
                .forEach(file -> System.out.println(file.getAbsolutePath()));
    }
}

org.pwss.util.PWSSDirectoryNavUtil