Converting JsonNode Object to Map

Date: 2023-08-16

This tutorial demonstrates three methods for converting JSON strings to Java Maps. It uses Jackson, a popular library offering ObjectMapper's readValue() method for efficient conversion, noting performance considerations for large datasets and suggesting streaming APIs for better memory management. Gson, another library, utilizes the fromJson() method with a Type object for similar conversion, also emphasizing memory efficiency for large JSONs. Finally, a Java 8 Stream API approach is presented, although it's less memory-efficient for massive datasets compared to Jackson or Gson. Each method efficiently maps JSON objects to Java Maps.

Read more: https://examples.javacodegeeks.com/jsonnode-to-map-conversion/