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Google Gson Interview Questions and Answers

Ques. How to provide Pretty Printing for JSON Output Format?
Ans.
The default JSON output that is provide by Gson is a compact JSON format. This means that there will not be any white-space in the output JSON structure. To generate a more readable and pretty looking JSON use setPrettyPrinting() in GsonBuilder.

Gson gson = new GsonBuilder().setPrettyPrinting().create();
String jsonOutput = gson.toJson(employee);
 
Output:

{
  "id": 1,
  "firstName": "Lokesh",
  "lastName": "Gupta",
  "roles": [
    "ADMIN",
    "MANAGER"
  ],
  "birthDate": "17/06/2014"
}
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