Check if Gson JsonArray is empty

Question

I am using HttpURLConnection to retrieve a JSON string. It looks like this:

{
  "status":"ok",
  "testSuites":[
    {
      // possibly one object in here
    }
  ]
}

I want to know if the array is empty. There will be at most one object in the array. I tried the following:

JsonParser parser = new JsonParser();
JsonObject obj = parser.parse(json).getAsJsonObject();
JsonArray testSuites = obj.getAsJsonArray("testSuites");

and then checked if testSuites was null, but that doesn't work, because it's not null. But it is empty!

Answer 1

I figured it out. You can use the size() method to determine the number of elements in the array.

if (testSuites.size() == 0)