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How to convert String to Json Object in java or groovy

I saved a json into the database as a string like this:
"[_district:_1_2_5village, _name:_1_1_2id_inter, _gender:_1_3_5sex]"
Now i want to convert it back to a Json Object so as to pick the key and value eg _district is the key and _1_2_5village is the value. Any help on how i can achieve this. Thanks
I tried to convert the string back into JSON by parsing but that dint work for me.

It doesn't work because that's not a JSON format, a JSON is a way of mapping objects and uses key value syntax like so:
{"key": "value"}
and an array would look like this:
[{"key": "value"},{"key": "value"}]
You'll need to make a custom parser for your syntax
Here's the json specification:
https://www.json.org/json-en.html

Extract fields from complicated server response

I have a server response that has this format:
{"bankAccounts":[
{"id" :"wfasfsd",
"balance":{"amount":90, "currency":"GBP"}
}
]
I cant find out how to parse through it efficiently
For a similar response with of simpler format this post helped me (Extract JSONObject and iterate through HashMap field)
The picture shows exactly how the server response looks like. I need to extract this into JSON and in the end, I need to have a HashMap with keys id, amount, currency

You can use json-simple library to read and write json objects.
Here you can see how to use it.

Android app and Database Communication: JSON Parsing and List View

I am developing an app that communicates with Database, to retrieve values. I am using PHP for the Backend, and developing on Android Studio, using the Volley Library.
My problem is, the values that I need to send are multiple records of a table, each with four columns, for example name, age, department, and country. I am using JSON to encode these values, but I need help with how to proceed. Should I use JSON encoded 2D Arrays? if so, how to make use PHP to construct this array, as there can be variable numbers of rows.
Also, How to parse that JSON Object/Array in Android (Java)?
As of now, this is my progress:
JSON Output in browser:
{"name0":"ABC","age0":"25","department0":"Medical","country0":"XYZ","name1":"DEF","age1":"26","department1":"Engg.","country1":"XYZ"}
Here, I named each "key" of JSON using a Loop in PHP, and encoded as JSON Object. But Having Difficulty in displaying this in Android. I have used a XML layout with 4 textviews, and LISTVIEW in the main Activity XML File.

I would suggest a different json structure for encoding. Yours will get messy pretty quick if there are a lot of records. For example you would have name0, name1, ... nameN. It would be better to make an array like so:
[
{
"name" : "ABC",
"age" : 25,
"department" : "Medical",
"country" : "XYZ"
},
{
...
}
]
Notice that there are no indices concatenated to your keys. You can get the index based on the json object node's position in the array if you need it.
As for parsing it in Android, you can refer to the documentation. There is a Json parser that comes with the SDK so all you need to do is read in your string as a json array and iterate over its object nodes as needed.
For example
String jsonResponse = " ... "; // whatever the php backend gives you when you make a call to the endpoint
JSONArray arr = new JSONArray(jsonResponse);
for (int i=0; i<arr.length(); i++) {
JSONObject obj = arr.get(i);
String name = obj.getString("name");
...
}

XML to JSON Convertor Using JSON Schema in Java

I'm trying to convert an xml to json data using the java-json.jar . The conversion is done. but have issues with the resulting JSON data like
An Integer is expected but the data is converted as String.
it would not create a list if there was only one child element ( even when it should be a list as per the JSON schema ).
Is there any way to convert XML into JSON based on the JSON schema in Java?

What is the proper format for a JSON Response?

I've worked with several different APIs where I needed to parse JSON. And in all cases the Response is constructed a bit differently.
I now need to expose some data via a JSON API and want to know the proper way to deliver that Response.
Here is an example of what I have now, however some users (one using Java) are having difficulty parsing.
{"status": "200 OK",
"code": "\/api\/status\/ok",
"result": {
"publishers": ["Asmodee", "HOBBITY.eu", "Kaissa Chess & Games"],
"playing_time": 30, "description": "2010 Spiel des Jahres WinnerOne player is the storyteller for the turn. He looks at the 6 images in his hand. From one of these, he makes up a sentence and says it out loud (without showing the card to the other players).The other players select amongst their 6 images the one that best matches the sentence made up by the storyteller.Then, each of them gives their selected card to the storyteller, without showing it to the others. The storyteller shuffles his card with all the received cards. ",
"expansions": ["Dixit 2", "Dixit 2: \"Gift\" Promo Card", "Dixit 2: The American Promo Card", "Dixit Odyssey"],
"age": 8,
"min_players": 3,
"mid": "\/m\/0cn_gq3",
"max_players": null,
"designers": ["Jean-Louis Roubira"],
"year_published": 2008,
"name": "Dixit"
}
}
The Java user in particular is complaining that they get the error:
org.json.JSONException:[json string] of type org.json.JSONObject cannot be converted to JSONArray
But in Python I am able to take in this Response, fetch "result" and then parse as I would any other JSON data.
* UPDATE *
I passed both my JSON and Twitter's timeline JSON to JSONLint. Both are valid. The Java user can parse Twitter's JSON but not mine. What I noticed with Twitter's JSON is that it's encapsulated with brackets [], signifying an array. And the error this user is getting with my JSON is that it cannot be converted to a JSON array. I didn't think I need to encapsulate in brackets.

It looks valid according to http://json.parser.online.fr/ (random json parser). Its in the other code i'd say ;)

How exactly are you generating this response? Are you doing it yourself?
I see you have a dangling comma at the end of the last element in publishers (i.e. after the value Kaissa Chess & Games).
I'd recommend using JSONLint to ensure your JSON is valid.