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I would like to iterate through the big wrapping JsonObject with Gson. My final aim is to get an ArrayList of all existing three digit code integers in the inner "unterfeld" objects, but that will be no problem once I can iterate through the outer object's properties.
{ "something1": { "bezeichnung": "something1", "unterfeld": [ { "bezeichnung": "bla1", "unterregionen": [ ], "code": 111 }, { "bezeichnung": "bla2", "unterregionen": [ ], "code": 222 } ], "code": 3 }, "something2": { "bezeichnung": "something2", "unterfeld": [ { "bezeichnung": "bla3", "unterregionen": [ ], "code": 333 } ], "code": 6 }, "something3": { "bezeichnung": "something3", "unterfeld": [ { "bezeichnung": "bla4", "unterregionen": [ ], "code": 444 }, { "bezeichnung": "bla5", "unterregionen": [ ], "code": 555 }, { "bezeichnung": "bla6", "unterregionen": [ ], "code": 666 } ], "code": 9 } } Is there any neat way to do that?
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getJSONObject("JObjects"); JSONArray getArray = getObject. getJSONArray("JArray1"); for(int i = 0; i < getArray. size(); i++) { JSONObject objects = getArray. getJSONArray(i); //Iterate through the elements of the array i. //Get thier value. //Get the value for the first element and the value for the last element. }
1) Create a Maven project and add json dependency in POM. xml file. 2) Create a string of JSON data which we convert into JSON object to manipulate its data. 3) After that, we get the JSON Array from the JSON Object using getJSONArray() method and store it into a variable of type JSONArray.
Description. The loop will iterate over all enumerable properties of the object itself and those the object inherits from its prototype chain (properties of nearer prototypes take precedence over those of prototypes further away from the object in its prototype chain).
Object. key(). It returns the values of all properties in the object as an array. You can then loop through the values array by using any of the array looping methods.
You can use entrySet to iterate over the members of the outermost JsonObject.
JsonObject object; ArrayList<Integer> codes = new ArrayList<Integer>(); for (Map.Entry<String,JsonElement> entry : object.entrySet()) { JsonArray array = entry.getValue().getAsJsonObject().getAsJsonArray("unterfeld"); for (JsonElement codeHolder : array) { codes.add(codeHolder.getAsJsonObject().getAsJsonPrimitive("code").getAsInt()); } } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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