public String testJSon() {
		JSONStringer vehicle = new JSONStringer();

		JSONArray jsonMembers = new JSONArray();
		try {
			JSONObject member1 = new JSONObject();
			// vehicle.object().key("SensorData");
			for (int i = 0; i < 2; i++) {
				member1.put("ip","127.0.0.1");
				member1.put("status_id","1");
				member1.put("source_node","1");
				member1.put("repeat_node","1");
				member1.put("hop_count","1");
				member1.put("sensor_group","1");
				member1.put("sensor_no","1");
				member1.put("sensor_type","1");
				member1.put("sensor_status","1");
				member1.put("sensor_data_1","1");
				member1.put("sensor_data_2","1");
				member1.put("sensor_data_3","1");
				member1.put("sensor_data_4","1");
				member1.put("sensor_data_5","1");
				member1.put("sensor_data_6","1");
				member1.put("sensor_data_hex","1");
				member1.put("sensor_data_time","1");
				member1.put("sensor_data_received_time","1");
				member1.put("sensor_data_status","1");
				jsonMembers.put(member1);
			}
			vehicle = vehicle.object().key("SensorData")
					.value(jsonMembers.toString()).endObject();
		} catch (JSONException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return vehicle.toString();
	}