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/introspect/AnnotatedMethodMap.java

package com.fasterxml.jackson.databind.introspect;

import java.lang.reflect.Method;
import java.util.*;

/**
 * Simple helper class used to keep track of collection of
 * {@link AnnotatedMethod}s, accessible by lookup. Lookup
 * is usually needed for augmenting and overriding annotations.
 */
public final class AnnotatedMethodMap
    implements Iterable<AnnotatedMethod>
{
    protected Map<MemberKey,AnnotatedMethod> _methods;

    public AnnotatedMethodMap() { }

    /**
     * @since 2.9
     */
    public AnnotatedMethodMap(Map<MemberKey,AnnotatedMethod> m) {
        _methods = m;
    }

    public int size() {
        return (_methods == null) ? 0 : _methods.size();
    }

    public AnnotatedMethod find(String name, Class<?>[] paramTypes)
    {
        if (_methods == null) {
            return null;
        }
        return _methods.get(new MemberKey(name, paramTypes));
    }

    public AnnotatedMethod find(Method m)
    {
        if (_methods == null) {
            return null;
        }
        return _methods.get(new MemberKey(m));
    }

    /*
    /**********************************************************
    /* Iterable implementation (for iterating over values)
    /**********************************************************
     */

    @Override
    public Iterator<AnnotatedMethod> iterator()
    {
        if (_methods == null) {
            return Collections.emptyIterator();
        }
        return _methods.values().iterator();
    }
}

⏎ com/fasterxml/jackson/databind/introspect/AnnotatedMethodMap.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