Jackson is "the Java JSON library" or "the best JSON parser for Java". Or simply as "JSON for Java".

Jackson Databind Source Code files are provided in the source packge (jackson-databind-2.14.0-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Databind Source Code below:

⏎ com/fasterxml/jackson/databind/util/Annotations.java

package com.fasterxml.jackson.databind.util;

import java.lang.annotation.Annotation;

/**
 * Interface that defines interface for accessing contents of a
 * collection of annotations. This is needed when introspecting
 * annotation-based features from different kinds of things, not
 * just objects that Java Reflection interface exposes.
 *<p>
 * Standard mutable implementation is {@link com.fasterxml.jackson.databind.introspect.AnnotationMap}
 */
public interface Annotations
{
    /**
     * Main access method used to find value for given annotation.
     */
    public <A extends Annotation> A get(Class<A> cls);

    /**
     * @since 2.9
     */
    public boolean has(Class<?> cls);

    /**
     * @since 2.9
     */
    public boolean hasOneOf(Class<? extends Annotation>[] annoClasses);

    /**
     * Returns number of annotation entries in this collection.
     */
    public int size();
}

⏎ com/fasterxml/jackson/databind/util/Annotations.java

Or download all of them as a single archive file:

File name: jackson-databind-2.14.0-sources.jar
File size: 1187952 bytes
Release date: 2022-11-05
Download 

⇒ Jackson Annotations Source Code

⇐ Download and Install Jackson Binary Package

⇑ Downloading and Reviewing jackson-*.jar

⇑⇑ Jackson - Java JSON library