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/cfg/ConfigFeature.java

package com.fasterxml.jackson.databind.cfg;

/**
 * Interface that actual SerializationFeature enumerations used by
 * {@link MapperConfig} implementations must implement.
 * Necessary since enums cannot be extended using normal
 * inheritance, but can implement interfaces
 */
public interface ConfigFeature
{
    /**
     * Accessor for checking whether this feature is enabled by default.
     */
    public boolean enabledByDefault();
    
    /**
     * Returns bit mask for this feature instance
     */
    public int getMask();

    /**
     * Convenience method for checking whether feature is enabled in given bitmask
     * 
     * @since 2.6
     */
    public boolean enabledIn(int flags);
}

⏎ com/fasterxml/jackson/databind/cfg/ConfigFeature.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