How to Convert Java Map to XML and XML Back to Java Map?

How can I convert a `Map<String, String>` to XML and vice versa using a lightweight API?

Map<String, String> map = new HashMap<>();
map.put("name", "chris");
map.put("island", "faranga");

MagicAPI.toXML(map, "root");

This guide explains how to convert a Java `Map<String, String>` to XML and back using a lightweight API called XStream, without relying on heavy frameworks such as JAXB or JSON libraries.

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;

public class MagicAPI {
    public static String toXML(Map<String, String> map, String rootElement) {
        XStream xStream = new XStream(new DomDriver());
        xStream.alias(rootElement, Map.class);
        return xStream.toXML(map);
    }

    public static Map<String, String> fromXML(String xml) {
        XStream xStream = new XStream(new DomDriver());
        return (Map<String, String>) xStream.fromXML(xml);
    }
}

Causes

• The need for lightweight XML conversion in Java applications.
• Avoiding complex frameworks like JAXB for simple use cases.

Solutions

• Use the XStream library, which allows easy XML conversions with minimal setup.
• Write a simple class or methods to encapsulate the conversion logic.

Mistake: Forgetting to add the necessary XStream library to the project.

Solution: Ensure the latest XStream framework is included in your project dependencies.

Mistake: Incorrectly defining the XML structure, leading to parsing issues.

Solution: Use the correct aliasing in XStream to match your expected XML format.