Unmarshalling xml string to java object with JAXB

Given the following Superhero class:

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

import lombok.Getter;
import lombok.Setter;

@XmlRootElement(name = "super-hero")
class SuperHero {
  @XmlElement(name = "name")
  String name;

  @XmlElement(name = "super-power")
  String superPower;

You can convert an XML String to a SuperHero instance with the following code:

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.io.StringReader;

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

import org.junit.jupiter.api.Test;
import org.junit.platform.runner.JUnitPlatform;
import org.junit.runner.RunWith;

class TestXmlStringToObjectUnmarshalling {

  static final String superHeroXml =
      "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>"
          + "<super-hero>"
          + "  <name>Superman</name>"
          + "  <super-power>Flight</super-power>"
          + "</super-hero>";

  void testXmlUnmarshalling() throws JAXBException {
    JAXBContext jaxbContext = JAXBContext.newInstance(SuperHero.class);
    Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();

    StringReader reader = new StringReader(superHeroXml);
    SuperHero superHero = (SuperHero) unmarshaller.unmarshal(reader);

    assertEquals("Flight", superHero.getSuperPower());


  • create a JAXBContext which includes the SuperHero class - JAXBContext.newInstance(SuperHero.class)
  • create a JAXB Unmarshaller and apply the unmarshal method to a StringReader wrapping the text (it could be also a FileReader or any other Reader for that matter)

Shared with from Codever. 👉 Use the Copy to mine functionality to copy this snippet to your own personal collection and easy manage your code snippets.

Codever is open source on Github ⭐🙏

Subscribe to our newsletter for more code resources and news

Adrian Matei (aka adixchen)

Adrian Matei (aka adixchen)
Life force expressing itself as a coding capable human being

Mongoose schema field from list of strings (enum)

Mongoose schema field from list of strings (enum) code snippet Continue reading

Set value of input field in angular template

Published on December 14, 2022

How to use jest test.each function

Published on December 14, 2022