Marshalling and unmarshalling of Hashtable using Holder class

Test.java

import java.io.StringReader;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Hashtable;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

public class Test {

	public static void main(String[] args) throws JAXBException {
		
		Hashtable<String, String> htmlColorCode = new Hashtable<String, String>();
		htmlColorCode.put("red", "FF0000");
		htmlColorCode.put("green", "00FF00");
		htmlColorCode.put("blue", "0000FF");
		
		MapHolder holder = new MapHolder();
		holder.setHtmlColorCode(htmlColorCode);
		
		System.out.println("--Marshalling--");
		String listXML = marshalIt(holder);
		
		System.out.println(listXML);
		
		System.out.println("--Unmarshalling--");
		MapHolder newHolder = (MapHolder) unmarshalIt(MapHolder.class, listXML);
		
		System.out.println(newHolder.getHtmlColorCode());
	}

	public static String marshalIt(Object objectName) throws JAXBException {

		JAXBContext jaxbContext = JAXBContext.newInstance(objectName.getClass());
		Marshaller marshaller = jaxbContext.createMarshaller();

		// For Pretty printing output
		marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

		StringWriter writer = new StringWriter();
		marshaller.marshal(objectName, writer);

		return writer.toString();

	}

	public static Object unmarshalIt(Class<?> className, String xml) throws JAXBException {

		JAXBContext jaxbContext = JAXBContext.newInstance(className);

		Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();

		StringReader reader = new StringReader(xml);

		return unmarshaller.unmarshal(reader);

	}

}