org.codehaus.jackson versus com.fasterxml.jackson.core

org.codehaus.jackson versus com.fasterxml.jackson.core

org.codehaus.jackson and com.fasterxml.jackson.core are two different packages that are associated with different versions of the Jackson library, which is a popular Java library for working with JSON data.

  1. org.codehaus.jackson:

    • This package is associated with the older version of Jackson, commonly known as Jackson 1.x or Jackson 2.0.x (also referred to as the "Codehaus Jackson").
    • It was the original package structure for Jackson and was used in Jackson versions prior to 2.0.
    • Codehaus Jackson reached its end-of-life, and development has shifted to the com.fasterxml.jackson.core package for Jackson 2.x and later versions.

  2. com.fasterxml.jackson.core:

    • This package is associated with the newer versions of Jackson, starting from Jackson 2.0 onwards.
    • It represents the core components of Jackson, such as the JSON parsing and generation libraries.
    • Jackson 2.x introduced significant improvements and a more modular architecture compared to the earlier versions.
    • The com.fasterxml.jackson.databind package, which is part of Jackson 2.x and later, provides data-binding functionality for mapping Java objects to/from JSON.

In summary, if you are working with Jackson in a new project or upgrading an existing project, it is recommended to use the com.fasterxml.jackson.core package along with com.fasterxml.jackson.databind for data-binding functionality. These newer versions offer better performance, improved features, and ongoing support and maintenance.

Here's a basic Maven dependency for Jackson 2.x:

<dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.12.5</version> <!-- Replace with the desired Jackson version --> </dependency>

Remember to adjust the version to the one you want to use, as newer versions may be available at the time of your project.

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