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/deser/std/ByteBufferDeserializer.java

package com.fasterxml.jackson.databind.deser.std;

import java.io.*;
import java.nio.ByteBuffer;

import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.type.LogicalType;
import com.fasterxml.jackson.databind.util.ByteBufferBackedOutputStream;

public class ByteBufferDeserializer extends StdScalarDeserializer<ByteBuffer>
{
    private static final long serialVersionUID = 1L;
    
    protected ByteBufferDeserializer() { super(ByteBuffer.class); }

    @Override // since 2.12
    public LogicalType logicalType() {
        return LogicalType.Binary;
    }

    @Override
    public ByteBuffer deserialize(JsonParser parser, DeserializationContext cx) throws IOException {
        byte[] b = parser.getBinaryValue();
        return ByteBuffer.wrap(b);
    }

    @Override
    public ByteBuffer deserialize(JsonParser jp, DeserializationContext ctxt, ByteBuffer intoValue) throws IOException {
        // Let's actually read in streaming manner...
        OutputStream out = new ByteBufferBackedOutputStream(intoValue);
        jp.readBinaryValue(ctxt.getBase64Variant(), out);
        out.close();
        return intoValue;
    }
}

⏎ com/fasterxml/jackson/databind/deser/std/ByteBufferDeserializer.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