import org.json.JSONObject; String someStringJsonData = "{"someKey": " + "null" + "}"; JSONObject someJsonObjectData = new JSONObject(someStringJsonData); Object someKey = someJsonObjectData.get("someKey"); if (null == someKey) { System.out.println("someKey is null"); } I have the above simple snippet of code. I would expect…
The read file is that: public ArrayList<Aventura> readFile(){ ArrayList<Aventura> aventures = new ArrayList<>(); try{ AventuraDAO aventuraDAO=new AventuraDAO(); AventuraManage aventuraManage=new AventuraManage(aventuraDAO); Gson g=new Gson(); JsonReader reader=new JsonReader(new FileReader("Files/adventures.json")); Aventura[] ave=g.fromJson(reader, Aventura[].class ); if (ave.length==0){ System.out.println("The file should be empty"); ArrayList<Aventura> aventures2…
I am trying to get a specific value from my JSON data. I could successfully call the entire json data,jsonOutput. But the thing is when I call a specific value in the jsonOutput, it shows me nullPointerError. I do not…
I'm trying to get AdMob ID's into my app from JsonData so that I can change it in the future. My Vision: JSON file will be uploaded into my server and a link of it will be inside the app.…
I want to deserialize a json like this: { "software": { "info": { "id": "1", "name": "نرم اقزار", "type": "complex" }, "sub": { "windows": { "info": { "id": "2", "name": "ویندوزی", "type": "complex" }, "sub": { "photoshop": { "info": {…