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

Jackson also allows you to parse or generate XML messages with the Jackson Dataformat XML Extension.

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

You can also browse Jackson Dataformat XML Source Code below:

⏎ com/fasterxml/jackson/dataformat/xml/jaxb/XmlJaxbAnnotationIntrospector.java

package com.fasterxml.jackson.dataformat.xml.jaxb;

import com.fasterxml.jackson.databind.cfg.MapperConfig;
import com.fasterxml.jackson.databind.introspect.*;
import com.fasterxml.jackson.databind.type.TypeFactory;
import com.fasterxml.jackson.dataformat.xml.XmlAnnotationIntrospector;

/**
 * Alternative {@link com.fasterxml.jackson.databind.AnnotationIntrospector}
 * implementation that
 * that USED TO build on {@code JaxbAnnotationIntrospector} from
 * {@code jackson-module-jaxb-annotatins} package.
 * But as of Jackson 2.13, SHOULD NOT BE USED as it DOES NOT WORK.
 * Removal was necessary because XML format package does not (and can not)
 * depend on JAXB annotations.
 * Class WILL BE REMOVED from Jackson 2.14 or later on.
 *<p>
 *
 * @deprecated Since 2.12 (as per above notes): broken since 2.13
 */
@Deprecated
public class XmlJaxbAnnotationIntrospector
    extends NopAnnotationIntrospector
    implements XmlAnnotationIntrospector
{
    private static final long serialVersionUID = 1L; // since 2.7

    @Deprecated
    public XmlJaxbAnnotationIntrospector() {
        super();
    }

    public XmlJaxbAnnotationIntrospector(TypeFactory typeFactory) {
        super();
    }

    /*
    /**********************************************************************
    /* XmlAnnotationIntrospector overrides
    /**********************************************************************
     */

    @Override
    public String findNamespace(MapperConfig<?> config, Annotated ann) {
        return null;
    }

    @Override
    public Boolean isOutputAsAttribute(MapperConfig<?> config, Annotated ann) {
        return null;
    }

    @Override
    public Boolean isOutputAsText(MapperConfig<?> config, Annotated ann) {
        return null;
    }

    @Override
    public Boolean isOutputAsCData(MapperConfig<?> config, Annotated ann) {
        return null;
    }
}

⏎ com/fasterxml/jackson/dataformat/xml/jaxb/XmlJaxbAnnotationIntrospector.java

Or download all of them as a single archive file:

File name: jackson-dataformat-xml-2.14.0-sources.jar
File size: 98015 bytes
Release date: 2022-11-05
Download 

⇒ Download Jackson Dataformat Binary Packages

⇐ Jackson Dataformat Extensions

⇑ Downloading and Reviewing jackson-*.jar

⇑⇑ Jackson - Java JSON library