using java nio (Paths, Files) through the file directory, turn into java.io.File

String directory = "C:\\Users\\Administrator\\AppData\\Local\\Temp\\8ad088a2-0bb3-41dc-89d9-2c57ef8414b0";
List<File> files = Files.list(Paths.get(directory)).map(path -> path.toFile()).collect(Collectors.toList());