How Can I Easily Pretty-Print JSON Data in Java Using GSON?

Pretty-Print JSON Made Easy in Java

Pretty-printing JSON data makes it more readable and easier to understand. If you're using the json-simple library and haven't found a built-in pretty-printing feature, here's a commonly used solution:

Google's GSON library offers a convenient way to achieve this. Follow these steps:

1. Create a Gson instance with pretty-printing enabled:

   Gson gson = new GsonBuilder().setPrettyPrinting().create();

2. Create a JsonParser to parse the original JSON string:

   JsonParser jp = new JsonParser();
   JsonElement je = jp.parse(uglyJsonString);

3. Convert the parsed element to a pretty-printed JSON string:

   String prettyJsonString = gson.toJson(je);

For an even more up-to-date approach, use the static parse method from JsonParser instead:

JsonElement je = JsonParser.parseString​(uglyJsonString);
String prettyJsonString = gson.toJson(je);

Remember to include the following import statements:

import com.google.gson.*;

And add the following Gradle dependency:

implementation 'com.google.code.gson:gson:2.8.7'

By leveraging GSON, you can now easily convert raw JSON data into a human-readable format.

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