gistfile1.txt

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;

//<?xml version="1.0" encoding="UTF-8" standalone="no"?>
// <person>
// <sex>female</sex>
// <firstname>Anna</firstname>
//<lastname>Smith</lastname>
// </person>
//gradle:  implementation ("com.sun.xml.bind:jaxb-impl:2.3.3")
@XmlRootElement(name = "person")
@XmlType(propOrder = { "firstname", "lastname", "sex" })
public class Person {

    private String firstname;
    private String lastname;
    private String sex;

    public String getFirstname() {
        return firstname;
    }
    @XmlElement(name = "firstname")
    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }

    public String getLastname() {
        return lastname;
    }
    @XmlElement(name = "lastname")
    public void setLastname(String lastname) {
        this.lastname = lastname;
    }

    @XmlElement(name = "sex")
    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getSex() {
        return sex;
    }
}