Jackson ObjectMapper: The Complete Guide

Jackson is a widely used Java library for converting Java objects to/from JSON.

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🚀 What is Jackson ObjectMapper?

Jackson is a widely used Java library for converting Java objects to/from JSON. The ObjectMapper class is the main API to:

✅ Convert Java Objects to JSON (Serialization)
✅ Convert JSON to Java Objects (Deserialization)
✅ Customize JSON structure using annotations
✅ Handle collections (List, Map) and nested objects
✅ Stream large JSON data efficiently

📦 Maven Dependency

To use Jackson ObjectMapper in your Java application, add the following Maven dependency:

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.17.2</version>
</dependency>