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/module/SimpleValueInstantiators.java

package com.fasterxml.jackson.databind.module;

import java.util.HashMap;

import com.fasterxml.jackson.databind.BeanDescription;
import com.fasterxml.jackson.databind.DeserializationConfig;
import com.fasterxml.jackson.databind.deser.ValueInstantiator;
import com.fasterxml.jackson.databind.deser.ValueInstantiators;
import com.fasterxml.jackson.databind.type.ClassKey;

public class SimpleValueInstantiators
    extends ValueInstantiators.Base
    implements java.io.Serializable
{
    private static final long serialVersionUID = -8929386427526115130L;

    /**
     * Mappings from raw (type-erased, i.e. non-generic) types
     * to matching {@link ValueInstantiator} instances.
     */
    protected HashMap<ClassKey,ValueInstantiator> _classMappings;

    /*
    /**********************************************************
    /* Life-cycle, construction and configuring
    /**********************************************************
     */

    public SimpleValueInstantiators()
    {
        _classMappings = new HashMap<ClassKey,ValueInstantiator>();        
    }
    
    public SimpleValueInstantiators addValueInstantiator(Class<?> forType,
            ValueInstantiator inst)
    {
        _classMappings.put(new ClassKey(forType), inst);
        return this;
    }
    
    @Override
    public ValueInstantiator findValueInstantiator(DeserializationConfig config,
            BeanDescription beanDesc, ValueInstantiator defaultInstantiator)
    {
        ValueInstantiator inst = _classMappings.get(new ClassKey(beanDesc.getBeanClass()));
        return (inst == null) ? defaultInstantiator : inst;
    }
}

⏎ com/fasterxml/jackson/databind/module/SimpleValueInstantiators.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