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/async/ByteArrayFeeder.java

package com.fasterxml.jackson.core.async;

import java.io.IOException;

/**
 * {@link NonBlockingInputFeeder} implementation used when feeding data
 * as byte arrays.
 *
 * @since 2.9
 */
public interface ByteArrayFeeder extends NonBlockingInputFeeder
{
     /**
      * Method that can be called to feed more data, if (and only if)
      * {@link #needMoreInput} returns true.
      * 
      * @param data Byte array that contains data to feed: caller must ensure data remains
      *    stable until it is fully processed (which is true when {@link #needMoreInput}
      *    returns true)
      * @param offset Offset within array where input data to process starts
      * @param end Offset after last byte contained in the input array
      * 
      * @throws IOException if the state is such that this method should not be called
      *   (has not yet consumed existing input data, or has been marked as closed)
      */
     public void feedInput(byte[] data, int offset, int end) throws IOException;
}

⏎ com/fasterxml/jackson/core/async/ByteArrayFeeder.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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⇑⇑ Jackson - Java JSON library