task1_Main.java

package task1;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.File;
import java.io.IOException;

/**
 * Created by andrew on 08.04.17.
 */
public class Main {
    public static void main(String[] args) {
        try {
            Trains trainsList = new Trains();
            File xmlFile = new File("/home/andrew/IdeaProjects/XML&&JSON/src/task1/trains.xml");
            DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();

            Document document = documentBuilder.parse(xmlFile);

            Element trains = document.getDocumentElement();

            NodeList nodeList = trains.getChildNodes();
            for(int i = 0; i< nodeList.getLength();i++){
                Node node = nodeList.item(i);
                if(node.getNodeType()==Node.ELEMENT_NODE){
                    Element element = (Element) node;
                    Train train = new Train();

                    train.setId(element.getAttributes().getNamedItem("id").getNodeValue());
                    train.setFrom(element.getElementsByTagName("from").item(0).getChildNodes().item(0).getNodeValue());
                    train.setTo(element.getElementsByTagName("to").item(0).getChildNodes().item(0).getNodeValue());
                    train.setDate(element.getElementsByTagName("date").item(0).getChildNodes().item(0).getNodeValue());
                    train.setDeparture(element.getElementsByTagName("departure").item(0).getChildNodes().item(0).getNodeValue());
                    trainsList.add(train);
                }
            }
            System.out.println(trainsList);
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        ;
    }
}

task1_Main2.java

package task1;

import javax.xml.bind.*;
import java.io.File;

/**
 * Created by andrew on 08.04.17.
 */
public class Main2 {
    public static void main(String[] args) {

        Trains trains =  getTrains();
        trains.add(new Train("England","sdaasd","sdadsad","sdsadasd"));
        writeTrains(trains);
        System.out.println(getTrains());
    }

    private static void writeTrains(Trains trains) {
        try{ File xmlFile = new File("/home/andrew/IdeaProjects/XML&&JSON/src/task1/trains.xml");


            JAXBContext jaxbContext = JAXBContext.newInstance(Trains.class);
            Marshaller marshaller = jaxbContext.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,true);

            marshaller.marshal(trains,xmlFile);
            marshaller.marshal(trains,System.out);


        } catch (PropertyException e) {
            e.printStackTrace();
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }

    private static Trains getTrains() {
        try{
            File xmlFile = new File("/home/andrew/IdeaProjects/XML&&JSON/src/task1/trains.xml");

            JAXBContext jaxbContext = JAXBContext.newInstance(Trains.class);
            Marshaller marshaller = jaxbContext.createMarshaller();

            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,true);
            Unmarshaller unmarshaller= jaxbContext.createUnmarshaller();
            Trains trains = (Trains) unmarshaller.unmarshal(xmlFile);

            return trains;

        } catch (JAXBException e) {
            e.printStackTrace();
        }
        return null;
    }
}

task1_Train.java

package task1;

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

/**
 * Created by andrew on 08.04.17.
 */
@XmlRootElement(name= "train")
public class Train {
    private String id;
    private String from;
    private String to;
    private String date;
    private String departure;
    public Train(){}

    public Train(String from, String to, String date, String departure) {
        this.from = from;
        this.to = to;
        this.date = date;
        this.departure = departure;
    }
    @XmlAttribute
    public void setId(String id) {
        this.id = id;
    }

    @XmlElement
    public void setFrom(String from) {
        this.from = from;
    }
    @XmlElement
    public void setTo(String to) {
        this.to = to;
    }
    @XmlElement
    public void setDate(String date) {
        this.date = date;
    }
    @XmlElement
    public void setDeparture(String departure) {
        this.departure = departure;
    }

    @Override
    public String toString() {
        return "task1.Train{" +
                "id = " + id +

                ", from='" + from + '\'' +
                ", to='" + to + '\'' +
                ", date='" + date + '\'' +
                ", departure='" + departure + '\'' +
                '}';
    }

    public String getId() {
        return id;
    }

    public String getFrom() {
        return from;
    }

    public String getTo() {
        return to;
    }

    public String getDate() {
        return date;
    }

    public String getDeparture() {
        return departure;
    }
}

task1_Trains.java

package task1;

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * Created by andrew on 08.04.17.
 */
@XmlRootElement(name = "trains")
public class Trains {

    public List<Train> getTrains() {
        return trains;
    }

    @XmlElement(name = "train")
    private List<Train> trains = new ArrayList<>();

    public void add(Train train){
        trains.add(train);
    }


    @Override
    public String toString() {
        return "Trains{" +
                "trains=" + trains +
                '}';
    }
}

task1_trains.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<trains>
    <train id="1">
        <date>19.12.2013</date>
        <departure>15:05</departure>
        <from>Kyiv</from>
        <to>Donetsk</to>
    </train>
    <train id="2">
        <date>19.12.2013</date>
        <departure>19:05</departure>
        <from>Lviv</from>
        <to>Donetsk</to>
    </train>
    <train/>
    <train>
        <date>sdadsad</date>
        <departure>sdsadasd</departure>
        <from>England</from>
        <to>sdaasd</to>
    </train>
    <train>
        <date>sdadsad</date>
        <departure>sdsadasd</departure>
        <from>England</from>
        <to>sdaasd</to>
    </train>
    <train>
        <date>sdadsad</date>
        <departure>sdsadasd</departure>
        <from>England</from>
        <to>sdaasd</to>
    </train>
</trains>