JSON exception catching

[Gopu Akraju]

Hi I am trying to catch exception for missing JSON objects

try{
            JSONObject jo = new JSONObject(c.outputByGetService());
            JSONArray ja = jo.getJSONArray("array");

for(int i=0;i<ja.length();i++){
                JSONObject lane = ja.getJSONObject(i);
                int laneId = lane.getInt("laneId");
                ArrayList a = new ArrayList();
                a.add(lane.getString("name"));
}

}catch(Exception e){
            e.printStackTrace();
        }

sometines "names" may not be found. Exception is being printed as org.json.JSONException: JSONObject["name"] not found.

But I want to add a "null" in the aaray list "a" and move on to next item in the for loop. How do I implement it. Thanks.>

[Wouter Oet]

Surround the getString("name") with a try catch statement and in the catch assign null to the array element.

[Joanne Neal]

Or you could use the JSONObject.has method to check if the key exists first.