String packageName = namespace.getString("package");
REVIEW_SORT sort = (REVIEW_SORT) namespace.get("sort");
Integer offset = namespace.getInt("offset");
Integer number = namespace.getInt("number");
ReviewResponse reviews = service.reviews(packageName, sort, offset, number);
GetReviewsResponse response = reviews.getGetResponse();
if (response.getReviewCount() == 0) {
System.out.println("No review found!");
}
System.out.println(response);
}