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/internal/package-info.java

/*
 * Copyright 2011 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * This package contains an implementation of a bounded
 * {@link java.util.concurrent.ConcurrentMap} data structure.
 * <p>
 * This package is intended only for use internally by Jackson libraries and has
 * missing features compared to the full <a href="http://code.google.com/p/concurrentlinkedhashmap/">
 * http://code.google.com/p/concurrentlinkedhashmap/</a> implementation.
 * <p>
 * {@link com.fasterxml.jackson.databind.util.internal.Weigher} is a simple interface
 * for determining how many units of capacity an entry consumes. Depending on
 * which concrete Weigher class is used, an entry may consume a different amount
 * of space within the cache. The
 * {@link com.fasterxml.jackson.databind.util.internal.Weighers} class provides
 * utility methods for obtaining the most common kinds of implementations.
 * <p>
 * {@link com.fasterxml.jackson.databind.util.internal.EvictionListener} provides the
 * ability to be notified when an entry is evicted from the map. An eviction
 * occurs when the entry was automatically removed due to the map exceeding a
 * capacity threshold. It is not called when an entry was explicitly removed.
 * <p>
 * The {@link com.fasterxml.jackson.databind.util.internal.PrivateMaxEntriesMap}
 * class supplies an efficient, scalable, thread-safe, bounded map. As with the
 * <tt>Java Collections Framework</tt> the "Concurrent" prefix is used to
 * indicate that the map is not governed by a single exclusion lock.
 *
 * @see <a href="http://code.google.com/p/concurrentlinkedhashmap/">
 *      http://code.google.com/p/concurrentlinkedhashmap/</a>
 */
package com.fasterxml.jackson.databind.util.internal;

⏎ com/fasterxml/jackson/databind/util/internal/package-info.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
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⇑⇑ Jackson - Java JSON library