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/ser/std/ByteBufferSerializer.java

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

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

import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonArrayFormatVisitor;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatTypes;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
import com.fasterxml.jackson.databind.util.ByteBufferBackedInputStream;

@SuppressWarnings("serial")
public class ByteBufferSerializer extends StdScalarSerializer<ByteBuffer>
{
    public ByteBufferSerializer() { super(ByteBuffer.class); }

    @Override
    public void serialize(ByteBuffer bbuf, JsonGenerator gen, SerializerProvider provider) throws IOException
    {
        // first, simple case when wrapping an array...
        if (bbuf.hasArray()) {
            final int pos = bbuf.position();
            gen.writeBinary(bbuf.array(), bbuf.arrayOffset() + pos, bbuf.limit() - pos);
            return;
        }
        // the other case is more complicated however. Best to handle with InputStream wrapper.
        // But should we rewind it; and/or make a copy?
        ByteBuffer copy = bbuf.asReadOnlyBuffer();
        if (copy.position() > 0) {
            copy.rewind();
        }
        InputStream in = new ByteBufferBackedInputStream(copy);
        gen.writeBinary(in, copy.remaining());
        in.close();
    }

    @Override // since 2.9
    public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint)
        throws JsonMappingException
    {
        // 31-Mar-2017, tatu: Use same type as `ByteArraySerializer`: not optimal but has to do
        JsonArrayFormatVisitor v2 = visitor.expectArrayFormat(typeHint);
        if (v2 != null) {
            v2.itemsFormat(JsonFormatTypes.INTEGER);
        }
    }
}

⏎ com/fasterxml/jackson/databind/ser/std/ByteBufferSerializer.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 

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⇑⇑ Jackson - Java JSON library