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/VirtualAnnotatedMember.java

package com.fasterxml.jackson.databind.introspect;

import java.lang.reflect.*;

import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.util.ClassUtil;

/**
 * Placeholder used by virtual properties as placeholder for
 * underlying {@link AnnotatedMember}.
 * 
 * @since 2.5
 */
public class VirtualAnnotatedMember extends AnnotatedMember
    implements java.io.Serializable
{
    private static final long serialVersionUID = 1L;

    protected final Class<?> _declaringClass;

    /**
     * @since 2.8 with this signature; had <code>_rawType</code> earlier
     */
    protected final JavaType _type;

    protected final String _name;

    /*
    /**********************************************************
    /* Life-cycle
    /**********************************************************
     */

    public VirtualAnnotatedMember(TypeResolutionContext typeContext, Class<?> declaringClass,
            String name, JavaType type)
    {
        super(typeContext, /* AnnotationMap*/ null);
        _declaringClass = declaringClass;
        _type = type;
        _name = name;
    }

    @Override
    public Annotated withAnnotations(AnnotationMap fallback) {
        return this;
    }
    
    /*
    /**********************************************************
    /* Annotated impl
    /**********************************************************
     */

    @Override
    public Field getAnnotated() { return null; }

    @Override
    public int getModifiers() { return 0; }

    @Override
    public String getName() { return _name; }

    @Override
    public Class<?> getRawType() {
        return _type.getRawClass();
    }

    @Override
    public JavaType getType() {
        return _type;
    }

    /*
    /**********************************************************
    /* AnnotatedMember impl
    /**********************************************************
     */

    @Override
    public Class<?> getDeclaringClass() { return _declaringClass; }

    @Override
    public Member getMember() { return null; }

    @Override
    public void setValue(Object pojo, Object value) throws IllegalArgumentException {
        throw new IllegalArgumentException("Cannot set virtual property '"+_name+"'");
    }

    @Override
    public Object getValue(Object pojo) throws IllegalArgumentException {
        throw new IllegalArgumentException("Cannot get virtual property '"+_name+"'");
    }
    
    /*
    /**********************************************************
    /* Extended API, generic
    /**********************************************************
     */

    public int getAnnotationCount() { return 0; }

    @Override
    public int hashCode() {
        return _name.hashCode();
    }
    
    @Override
    public boolean equals(Object o) {
        if (o == this) return true;
        if (!ClassUtil.hasClass(o, getClass())) {
            return false;
        }
        VirtualAnnotatedMember other = (VirtualAnnotatedMember) o;
        return (other._declaringClass == _declaringClass)
                && other._name.equals(_name);
    }

    @Override
    public String toString() {
        return "[virtual "+getFullName()+"]";
    }
}

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