### Jackson Dataformat CBOR Library Usage and Documentation Jackson Dataformat CBOR is an extension module designed to support encoding and decoding of data using the Concise Binary Object Representation (CBOR) format. This library integrates seamlessly with the core Jackson components, allowing developers to work efficiently with CBOR formatted data within Java applications. To use `jackson-dataformat-cbor`, one must include it as a dependency in the project setup. For Maven-based projects, adding the following snippet ensures that the necessary package is available: ```xml <dependency> <groupId>com.fasterxml.jackson.dataformat</groupId> <artifactId>jackson-dataformat-cbor</artifactId> <version>2.13.0</version> </dependency> ``` For Gradle configurations, the equivalent line would be: ```groovy implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-cbor:2.13.0' ``` Once included, initializing a `CBORMapper` object provides access to methods for reading from or writing to CBOR streams[^3]. Here’s how one can serialize objects into CBOR bytes and deserialize them back: ```java import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.dataformat.cbor.CBORFactory; // Create ObjectMapper instance configured for CBOR ObjectMapper mapper = new ObjectMapper(new CBORFactory()); // Serialize POJOs to byte arrays containing CBOR-encoded content. byte[] cborBytes = mapper.writeValueAsBytes(myPojo); // Deserialize CBOR byte array back into POJO instances. MyClass myDeserializedObj = mapper.readValue(cborBytes, MyClass.class); ``` The official GitHub repository serves as comprehensive documentation covering advanced features such as customizing serialization/deserialization behavior through annotations or extending functionality via mixins.