how to check if a JSONArray is empty in java?

Question

I am working on an android app that get json content of a webservice called \"WebUntis\". The Json content i am getting looks like:

{\"jsonrpc\":\"2.0\",\"id         


        

Answer 1

You can also use isEmpty() method, this is the method we use to check whether the list is empty or not. This method returns a Boolean value. It returns true if the list is empty otherwise it gives false. For example:

if (!k1.isEmpty()) {
    klassenID[i] = kl.getJSONObject(0).getString("id");     
}