Java HTML / XML How to - Bind Jaxb and unordered set with separate lists for every element

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Question

We would like to know how to bind Jaxb and unordered set with separate lists for every element.

Answer

/*  ww  w  . ja v a2  s. c  o m*/
import java.io.File;
import java.util.List;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlRootElement;

public class Main {

  public static void main(String[] args) throws Exception {
    JAXBContext jc = JAXBContext.newInstance(Root.class);

    Unmarshaller unmarshaller = jc.createUnmarshaller();
    File xml = new File("input.xml");
    Root root = (Root) unmarshaller.unmarshal(xml);

    Marshaller marshaller = jc.createMarshaller();
    marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
    marshaller.marshal(root, System.out);
  }

  @XmlRootElement
  @XmlAccessorType(XmlAccessType.FIELD)
  public static class Root {

    List<String> x;
    List<Integer> y;

  }
}

input.xml

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <y>1</y>
    <x>A</x>
    <y>2</y>
    <x>B</x>
    <y>3</y>
    <x>C</x>
</root>

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