Food.java
public class Food {

	private String name;
	private String description;
	private int cal;
	private double price;

	public Food(String name, String description, int cal, double price) {
		super();
		this.name = name;
		this.description = description;
		this.cal = cal;
		this.price = price;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	public int getCal() {
		return cal;
	}

	public void setCal(int cal) {
		this.cal = cal;
	}

	public double getPrice() {
		return price;
	}

	public void setPrice(double price) {
		this.price = price;
	}

	public String getShortDesc() {
		String[] words = description.split(" ");
		if (words.length < 3) {
			return description;
		}
		return words[0] + " " + words[1] + " " + words[2] + "...";

	}

	@Override
	public String toString() {
		return "Food [name=" + name + ", description=" + description + ", cal=" + cal + ", price=" + price + "]";
	}
}



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foodmenu.java



import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public class FoodMenu {

	List<Food> menu;

	public void read(String xmlFile) {

		SAXReader reader = new SAXReader();
		Document document;
		try {
			document = reader.read(xmlFile);
			Element root = document.getRootElement();
			List<Element> food = root.elements("food");
			menu = new ArrayList<>();
			for (Element e : food) {
				String name = e.elementText("name");
				String description = e.elementText("description");
				double price = Double.parseDouble(e.elementText("price").substring(1));
				int cal = Integer.parseInt(e.elementText("calories"));

				Food f = new Food(name, description, cal, price);
				menu.add(f);
			}

		} catch (DocumentException e) {
			System.out.println("greska prilikom citanja");
		}

	}

	public String toString() {
		String s = "Breakfast menu:";
		for (Food food : menu) {
			s += food + "\n";
		}

		return s;

	}

	public double avg() {

		if (menu == null || menu.size() == 0) {
			return 0;
		}
		double sum = 0;
		for (Food food : menu) {
			sum += food.getPrice();
		}
		return sum / menu.size();

	}

	public void show() {

		double avg = avg();
		for (Food food : menu) {
			if (food.getPrice() > avg) {
				System.out.println(food);
			}
		}

	}

	public void create(String xmlFile) {

		Document document = DocumentHelper.createDocument();
		Element root = document.addElement("menu");
		double avg = avg();
		for (Food food : menu) {
			if (food.getPrice() > avg) {
				Element foodEl = root.addElement("food");
				foodEl.addAttribute("name", food.getName());
				Element priceUSD = foodEl.addElement("price");
				priceUSD.setText(food.getPrice() + "");
				priceUSD.addAttribute("currency", "USD");
				Element priceEur = foodEl.addElement("price");
				priceEur.setText(food.getPrice() * 0.85 + "");
				priceEur.addAttribute("currency", "EUR");
				foodEl.addElement("shortDescription").setText(food.getShortDesc());
				foodEl.addElement("calories").setText(food.getCal()+"");
			}
		}
		try {
			XMLWriter write = new XMLWriter(new FileWriter(xmlFile));
			write.write(document);
			write.close();
		} catch (IOException e) {
			System.out.println("Greska prilikom upisa.");
		}

	}
}



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main



public class Main {

	public static void main(String[] args) {

		FoodMenu fm = new FoodMenu();

		fm.read("FoodMenu.xml");
		System.out.println(fm);
		System.out.println();
		fm.show();
		fm.create("novi.xml");

	}
}