JSON to Java Map: Json-lib or Custom Parser – Which is Better?

Converting JSON to Map: Using Json-Lib or Writing a Custom Parser

If you wish to convert JSON data like the provided example into a Java Map, utilizing third-party libraries such as Json-lib is a recommended approach. However, for simple mappings as in this case, you might find it easier to employ readily available tools from the http://json.org website (Java section).

Using Jackson

Among the tools from json.org, Jackson (https://github.com/FasterXML/jackson-databind/#5-minute-tutorial-streaming-parser-generator) offers a straightforward solution:

Map<String, Object> result = new ObjectMapper().readValue(JSON_SOURCE, HashMap.class);

In this code, JSON_SOURCE can represent a File, input stream, reader, or a JSON content String.

Additional Tips

While writing a custom parser might seem tempting for such a simple task, it is generally advised against due to the potential for error. Instead, leverage the available libraries and tools that are designed specifically for handling JSON data manipulation.

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