Jackson is "the Java JSON library" or "the best JSON parser for Java". Or simply as "JSON for Java".

Jackson Core Source Code files are provided in the source packge (jackson-core-2.14.0-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Core Source Code below:

⏎ com/fasterxml/jackson/core/FormatSchema.java

/* Jackson JSON-processor.
 *
 * Copyright (c) 2007- Tatu Saloranta, tatu.saloranta@iki.fi
 */

package com.fasterxml.jackson.core;

/**
 * Simple tag interface used to mark schema objects that are used by some
 * {@link JsonParser} and {@link JsonGenerator} implementations to further
 * specify structure of expected format.
 * Basic JSON-based parsers and generators do not use schemas, but some data
 * formats (like many binary data formats like Thrift, protobuf) mandate
 * use of schemas.
 * Others like CSV and Java Properties may optionally use schemas (and/or use simple
 * default schema to use if caller does not specify one) which specifies
 * some aspects of structuring content.
 *<p>
 * Since there is little commonality between schemas for different data formats,
 * this interface does not define much meaningful functionality for accessing
 * schema details; rather, specific parser and generator implementations need
 * to cast to schema implementations they use. This marker interface is mostly
 * used for tagging "some kind of schema" -- instead of passing opaque
 * {@link java.lang.Object} -- for documentation purposes.
 */
public interface FormatSchema
{
    /**
     * Method that can be used to get an identifier that can be used for diagnostics
     * purposes, to indicate what kind of data format this schema is used for: typically
     * it is a short name of format itself, but it can also contain additional information
     * in cases where data format supports multiple types of schemas.
     *
     * @return Logical name of schema type
     */
    String getSchemaType();
}

⏎ com/fasterxml/jackson/core/FormatSchema.java

Or download all of them as a single archive file:

File name: jackson-core-2.14.0-sources.jar
File size: 497693 bytes
Release date: 2022-11-05
Download 

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