Files.lines(Paths.get(ReadFile.class.getResource(path).toURI()), StandardCharsets.UTF_8)
                .flatMap(s->Arrays.stream(s.split(" ")))
                .filter(s->!s.isEmpty())
                .collect(Collectors.toList());

List<List<String>> list = Files.lines(Paths.get(ReadFile.class.getResource(path).toURI()), StandardCharsets.UTF_8)
            .map(s -> Arrays.asList(s.split(" ")))
            .collect(Collectors.toList());

System.out.println(list);