Question

I am making a facebook app .I am able to fetch a user’s friend list using the graph api.The friend list is returned in the form of JSON.How to parse it is using java?I have the json simple library but i am having trouble using it.

Answer 1

Here:

String response = .....

JSONArray arr = (JSONArray)JSONValue.parse(response);
JSONObject obj = (JSONObject)JSONValue.parse(response);

You should be able to know if the returned response is an array or object based on what you asked for.

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Edit

In the case you get a json object which contains an array:

String response = .....

JSONObject obj = (JSONObject)JSONValue.parse(response);

if (obj.containsKey("xxxx")) {
    JSONArray arr = (JSONArray)obj.get("xxxx");
}

The JSONObject supports java.util.Map interface and JSONArray the supports java.util.List interface.