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/LinkedNode.java

package com.fasterxml.jackson.databind.util;

/**
 * Node of a forward-only linked list.
 * 
 * @author tatu
 */
public final class LinkedNode<T>
{
    private final T value;

    private LinkedNode<T> next;
    
    public LinkedNode(T value, LinkedNode<T> next)
    {
        this.value = value;
        this.next = next;
    }
    
    public void linkNext(LinkedNode<T> n)
    {
        if (next != null) { // sanity check
            throw new IllegalStateException();
        }
        next = n;
    }
    
    public LinkedNode<T> next() { return next; }
    
    public T value() { return value; }
    
    /**
     * Convenience method that can be used to check if a linked list
     * with given head node (which may be null to indicate empty list)
     * contains given value
     * 
     * @param <ST> Type argument that defines contents of the linked list parameter
     * @param node Head node of the linked list
     * @param value Value to look for
     * @return True if linked list contains the value, false otherwise
     */
    public static <ST> boolean contains(LinkedNode<ST> node, ST value)
    {
        while (node != null) {
            if (node.value() == value) {
                return true;
            }
            node = node.next();
        }
        return false;
    }
}

⏎ com/fasterxml/jackson/databind/util/LinkedNode.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