Insert object to array json data

Question

I need a help.

I have JSON with data:

{
   "Tomy":[
   {
      "name":"Tomy",
      "age":25
   }]
}

In my app, I need to add new persons and save to JSON.

How do I need to insert a new person to the last position in JSON?

Example what I want to get::

{
   "Tomy":[
   {
      "name":"Tomy",
      "age":25
   }],
   "Boby":[
   {
      "name":"Boby",
      "age:38
   }]
}

Please help explain how to work with JSON. Or indicate the direction.

Does this answer your question? Android- create JSON Array and JSON Object — Jaymin
– Jaymin, Commented Jan 23, 2020 at 6:02
Thanks for the help and the one who put me dislike. Can't you see that I'm new here? — Vlad Shirpaev
– Vlad Shirpaev, Commented Jan 23, 2020 at 6:09
Welcome to Stackoverflow Vlad! Please take some time to read How to ask good questions?, as well as this question checklist. Also please try to create a minimal reproducible example of your own attempt and show it to us. — Smile
– Smile, Commented Jan 23, 2020 at 6:32

George Lords of Castle · Accepted Answer · 2023-09-25 03:34:26Z

1

You can make a person which will be array of individual person objects, something like this below.

{
   "persons":[
   {
      "name":"Tomy",
      "age":25
   },
   {
      "name":"Boby",
      "age:38
   }]
}

public class MyJson{ private List<Person> persons; //its getter setter} and then Person class public class Person{ private String name; private int age; //its getter setter}

then code to add it into json like below

List<Persons> personLs = Lists.newArrayList();

personLs.add();

and then JsonUtils.getMapper().writeValueAsString(new MyJson(personLs));

edited Sep 25, 2023 at 3:34

George Lords of Castle

1,6914 gold badges15 silver badges33 bronze badges

answered Jan 23, 2020 at 7:18

Shubham Pandey

1,8283 gold badges19 silver badges24 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Vlad Shirpaev Over a year ago

Thanks. Structure of data I unintended. But I can't to insert new person to json. I need to get size of jsonArray of Person, and after to insert only?

Shubham Pandey Over a year ago

Ok, so you will create a Person class, like below

Collectives™ on Stack Overflow

Insert object to array json data

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related