Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

public class Main {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(Field.class);
        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

        Field field = new Field();
        field.name = "myField";
        marshaller.marshal(field, System.out);

        field.status = "citizen";
        field.country = "England";
        marshaller.marshal(field, System.out);

        field.status = null;
        marshaller.marshal(field, System.out);
    }

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

        @XmlAttribute
        String name;

        @XmlAttribute
        String status;

        @XmlAttribute
        String country;

        private void beforeMarshal(Marshaller marshaller) {
            if (country != null && status == null) {
                throw new RuntimeException("country was set but status was not");
            }
        }

    }

}