json-simple - w3toppers.com

Decode JSON string in Java with json-simple library

This is the best and easiest code: public class test { public static void main(String str[]) { String jsonString = “{\”stat\”: { \”sdr\”: \”aa:bb:cc:dd:ee:ff\”, \”rcv\”: \”aa:bb:cc:dd:ee:ff\”, \”time\”: \”UTC in millis\”, \”type\”: 1, \”subt\”: 1, \”argv\”: [{\”type\”: 1, \”val\”:\”stackoverflow\”}]}}”; JSONObject jsonObject = new JSONObject(jsonString); JSONObject newJSON = jsonObject.getJSONObject(“stat”); System.out.println(newJSON.toString()); jsonObject = new JSONObject(newJSON.toString()); System.out.println(jsonObject.getString(“rcv”)); System.out.println(jsonObject.getJSONArray(“argv”)); } … Read more

How to read json file into java with simple JSON library

The whole file is an array and there are objects and other arrays (e.g. cars) in the whole array of the file. As you say, the outermost layer of your JSON blob is an array. Therefore, your parser will return a JSONArray. You can then get JSONObjects from the array … JSONArray a = (JSONArray) … Read more

Pretty-Print JSON in Java

Google’s GSON can do this in a nice way: Gson gson = new GsonBuilder().setPrettyPrinting().create(); JsonParser jp = new JsonParser(); JsonElement je = jp.parse(uglyJsonString); String prettyJsonString = gson.toJson(je); or since it is now recommended to use the static parse method from JsonParser you can also use this instead: Gson gson = new GsonBuilder().setPrettyPrinting().create(); JsonElement je = … Read more