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/impl/UnknownSerializer.java

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

import java.io.IOException;

import com.fasterxml.jackson.core.*;

import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import com.fasterxml.jackson.databind.ser.std.ToEmptyObjectSerializer;
import com.fasterxml.jackson.databind.util.NativeImageUtil;

@SuppressWarnings("serial")
public class UnknownSerializer
    extends ToEmptyObjectSerializer // since 2.13
{
    public UnknownSerializer() {
        super(Object.class);
    }

    // @since 2.6
    public UnknownSerializer(Class<?> cls) {
        super(cls);
    }

    @Override
    public void serialize(Object value, JsonGenerator gen, SerializerProvider ctxt) throws IOException
    {
        // 27-Nov-2009, tatu: As per [JACKSON-201] may or may not fail...
        if (ctxt.isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS)) {
            failForEmpty(ctxt, value);
        }
        super.serialize(value, gen, ctxt);
    }

    @Override
    public void serializeWithType(Object value, JsonGenerator gen, SerializerProvider ctxt,
            TypeSerializer typeSer) throws IOException
    {
        if (ctxt.isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS)) {
            failForEmpty(ctxt, value);
        }
        super.serializeWithType(value, gen, ctxt, typeSer);
    }

    protected void failForEmpty(SerializerProvider prov, Object value)
            throws JsonMappingException {
        Class<?> cl = value.getClass();
        if (NativeImageUtil.needsReflectionConfiguration(cl)) {
            prov.reportBadDefinition(handledType(), String.format(
                    "No serializer found for class %s and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS). This appears to be a native image, in which case you may need to configure reflection for the class that is to be serialized",
                    cl.getName()));
        } else {
            prov.reportBadDefinition(handledType(), String.format(
                    "No serializer found for class %s and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS)",
                    cl.getName()));
        }
    }
}

⏎ com/fasterxml/jackson/databind/ser/impl/UnknownSerializer.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