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/AbstractTypeResolver.java

package com.fasterxml.jackson.databind;

/**
 * Defines interface for resolvers that can resolve abstract types into concrete
 * ones; either by using static mappings, or possibly by materializing
 * implementations dynamically.
 */
public abstract class AbstractTypeResolver
{
    /**
     * Try to locate a subtype for given abstract type, to either resolve
     * to a concrete type, or at least to a more-specific (and hopefully supported)
     * abstract type, one which may have registered deserializers.
     * Method is called before trying to locate registered deserializers
     * (as well as standard abstract type defaulting that core Jackson does),
     * so it is typically implemented to add custom mappings of common abstract
     * types (like specify which concrete implementation to use for binding
     * {@link java.util.List}s).
     *<p>
     * Note that this method does not necessarily have to do full resolution
     * of bindings; that is, it is legal to return type that could be further
     * resolved: caller is expected to keep calling this method on registered
     * resolvers, until a concrete type is located.
     *
     * @param config Configuration in use
     * @param type Type to find mapping for
     *
     * @return Type to map given input type (if mapping found) or {@code null} (if not).
     */
    public JavaType findTypeMapping(DeserializationConfig config, JavaType type) {
        return null;
    }

    /**
     * Older variant of {@link #resolveAbstractType(DeserializationConfig, BeanDescription)};
     * obsoleted in 2.7
     *
     * @deprecated since 2.8 (may be removed from 2.9 or later)
     *
     * @param config Configuration in use
     * @param type Type to resolve
     *
     * @return Resolved concrete type
     */
    @Deprecated
    public JavaType resolveAbstractType(DeserializationConfig config,
            JavaType type) {
        return null;
    }

    /**
     * Method called to try to resolve an abstract type into
     * concrete type (usually for purposes of deserializing),
     * when no concrete implementation was found.
     * It will be called after checking all other possibilities,
     * including defaulting.
     *
     * @param config Configuration in use
     * @param typeDesc Description of the POJO type to resolve
     * 
     * @return Resolved concrete type (which should retain generic
     *    type parameters of input type, if any), if resolution succeeds;
     *    null if resolver does not know how to resolve given type
     *
     * @since 2.7
     */
    public JavaType resolveAbstractType(DeserializationConfig config,
            BeanDescription typeDesc) {
        return null;
    }
}

⏎ com/fasterxml/jackson/databind/AbstractTypeResolver.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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