How do I pretty-print existing JSON data with Java? [closed]

Question

I have a compact JSON string, and I want to format it nicely in Java without having to deserialize it first -- e.g. just like jsonlint.org does it. Are there any libraries out there that provides this?

A similar solution for XML would also be nice.

Answer 1

int spacesToIndentEachLevel = 2; new JSONObject(jsonString).toString(spacesToIndentEachLevel); 

Using org.json.JSONObject (built in to JavaEE and Android)

Answer 2

Use gson. https://www.mkyong.com/java/how-to-enable-pretty-print-json-output-gson/

Gson gson = new GsonBuilder().setPrettyPrinting().create(); String json = gson.toJson(my_bean); 

output

{   "name": "mkyong",   "age": 35,   "position": "Founder",   "salary": 10000,   "skills": [     "java",     "python",     "shell"   ] }