Why am I getting a null object when creating a JSONObject from string?

Question

I've written a Java Method for an Android Studio (3.0.1) project that creates a JSONObject from a String. Now I've written a JUnit test to test that the JSON object is correct.

The problem is always that the JSONObject is NULL.

For example, I tried running the following code:

String response = "{\"songs\":\"title\"}";
System.out.println(response);
JSONObject submitPlaylistResponse = new JSONObject(response);
System.out.println(submitPlaylistResponse.toString());

The output is:

{"songs":"title"}
null

Why is my JsonObject still null? What am I missing? I feel like I'm missing something trivial/simple.

If you replace JSONObject submitPlaylistResponse = new JSONObject(response); with JSONObject submitPlaylistResponse = new JSONObject("{\"songs\":\"title\"}"); what do you get ? — android_Muncher
– android_Muncher, Commented Nov 21, 2017 at 2:46
try this one System.out.println(submitPlaylistResponse.getString("songs")); — Android Mediocre
– Android Mediocre, Commented Nov 21, 2017 at 3:06
@android_Muncher: same thing - null object. Import is import org.json.*; — zmike
– zmike, Commented Nov 21, 2017 at 3:15

Oleg Kot · Accepted Answer · 2024-06-24 15:32:52Z

3

After viewing JSONObject code I found this:

public String toString() {
   return "null";
}

As you see, method always returns "null" string not null object. In this case, if the task is to check the correctness of your JSONObject you can follow @G.Dator answer or use String toString (int indentSpaces).

1 Comment

Sridhar Sarnobat Over a year ago

looks like toString(int indentFactor) is also broken. How in the world does someone introduce a bug like this when it worked in previous versions?! I guess people rewrite classes. This is why I keep 3rd party libraries to a minimum (though org.json was the one I had the most trust in until now).

Satish Ghuge · Accepted Answer · 2020-05-14 12:16:46Z

1

Add below line to build.gradle dependencies

testImplementation 'org.json:json:20190722'

Refer this question for more details.

answered May 14, 2020 at 12:16

Satish Ghuge

717 bronze badges

Comments

Bek · Accepted Answer · 2017-11-21 03:36:36Z

0

Probably you are using wrong library. Check your import. It must be like this. org.json.JSONObject; I've checked your code and it's working on my android studio 2.3

answered Nov 21, 2017 at 3:36

Bek

8,5414 gold badges21 silver badges32 bronze badges

Collectives™ on Stack Overflow

Why am I getting a null object when creating a JSONObject from string?

3 Answers 3

1 Comment

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related