[Android] json으로 데이터 받을 때 {} []

이렇게 끝이 {}이면

          Call<BookInfoWithBool> call = getNetworkManager().getBookApi().getListWithSearch(name);
            call.enqueue(new Callback<BookInfoWithBool>() {
                @Override
                public void onResponse(Call<BookInfoWithBool> call, Response<BookInfoWithBool> response) {
                    BookInfoWithBool bookInfoWithBools = response.body();
                    if (response.isSuccessful()) {
                        BookInfo bookInfo = (BookInfo) bookInfoWithBools.getBookInfoList();
                        Boolean isExist = bookInfoWithBools.getIsExist();
                        Toast.makeText(RecommendDetailActivity.this, bookInfo.getBook_name() + " !!", Toast.LENGTH_SHORT).show();
//                        adapter = new RecyclerViewAdapter(getApplicationContext(), books, tagNames);
//                        recyclerView.setAdapter(adapter);

                    } else {
                        Toast.makeText(RecommendDetailActivity.this, "오류가 발생했습니다.", Toast.LENGTH_SHORT).show();
                    }
                }
                @Override
                public void onFailure(Call<BookInfoWithBool> call, Throwable t) {
                    Toast.makeText(RecommendDetailActivity.this, "오류가 발생했습니다.", Toast.LENGTH_SHORT).show();
                }
            });

이렇게 받아도 되고,

이렇게 끝이 [] 이면

Call<List<Tag>> list = getNetworkManager().getBookApi().getTags(accessToken, idToken, refreshToken);
list.enqueue(new Callback<List<Tag>>() {
    @Override
    public void onResponse(Call<List<Tag>> call, Response<List<Tag>> response) {
        List<Tag> tags = response.body();
        tagNames.setAllTags(tags);
        for (int i = 0; i < tagNames.getAllTags().size(); i++)
            flowLayout.addTag(tagNames.getAllTags().get(i));

    }

    @Override
    public void onFailure(Call<List<Tag>> call, Throwable t) {
        Toast.makeText(MainActivity.this, "오류가 발생했습니다.", Toast.LENGTH_SHORT).show();
    }
});

이렇게 <List<Tag>>로 가져오기1