JSON Creation from Java

Question

HI I am new to JSON and I have to create the below JSON from Java.

{{ "TESTMAIN" : { "TEST1" : { "384" : "250", "96" : "450" },
           "TEST2" :{ "384" : "5", "96" : "10" },
           "TEST3" : "256",
           "TEST4" : "T" }

I have created each object using JSONObject.put. But how to combine the 4 TEST objects with the text TESTMAIN. Any idea?

Sean Patrick Floyd · Accepted Answer · 2011-07-01 14:10:38Z

1

The json library is awfully verbose, this should do what you need:

final JSONObject wrapper = new JSONObject();
final JSONObject inner = new JSONObject();
final JSONObject innersub1 = new JSONObject();
innersub1.put("384", "250");
innersub1.put("96", "450");
final JSONObject innersub2 = new JSONObject();
innersub2.put("384", "5");
innersub2.put("96", "10");
inner.put("TEST1", innersub1);
inner.put("TEST2", innersub2);
inner.put("TEST3", "256");
inner.put("TEST4", "T");
wrapper.put("TESTMAIN", inner);
System.out.println(wrapper.toString());

I would advise you to look at more modern JSON libraries like Gson or Jackson, because they make life a lot simpler!

answered Jul 1, 2011 at 14:10

Sean Patrick Floyd

301k72 gold badges481 silver badges598 bronze badges

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

Comments

Dave G · Accepted Answer · 2011-07-01 13:55:29Z

0

Is there any particular reason you're doing this by hand? There is a JSON library for Java that can do this for you.

JSON in Java, it has APIs for creating objects, arrays, etc. It will also serialize and deserialize JSON.

answered Jul 1, 2011 at 13:55

Dave G

9,82238 silver badges43 bronze badges

3 Comments

Thomas Over a year ago

I use json-simple, which is as the name implies - simple :)

Dave G Over a year ago

See section 2-3 of their examples. That covers how to use a List implementation to add an array.

Vikram P Over a year ago

any sample code to form the above JSON using the libraries.. Thanks

HJW · Accepted Answer · 2011-07-01 13:55:31Z

0

You need a JSONArray.

answered Jul 1, 2011 at 13:55

HJW

23.5k51 gold badges147 silver badges218 bronze badges

1 Comment

Sean Patrick Floyd Over a year ago

Nope, a JSONArray will create square brackets. He needs nested JSONObjects.

Collectives™ on Stack Overflow

JSON Creation from Java

3 Answers 3

Comments

3 Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

3 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related