learn_java-design-patterns/MultiPatterns/DuckSimulatorExample/Flock.java at main · ForeverAProgrammer/learn_java-design-patterns · GitHub

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package MultiPatterns.DuckSimulatorExample;

import java.util.ArrayList;
import java.util.Iterator;

public class Flock implements Quackable {
    ArrayList<Quackable> quackers = new ArrayList<>();


    public void add(Quackable quacker) {
        quackers.add(quacker);
    }

    @Override
    public void quack() {
        Iterator<Quackable> iterator = quackers.iterator();
        while (iterator.hasNext()) {
            Quackable quacker = iterator.next();
            quacker.quack();
        }
    }

    @Override
    public void registerObserver(Observer observer) {
        Iterator<Quackable> iterator = quackers.iterator();
        while (iterator.hasNext()) {
            Quackable quacker = iterator.next();
            quacker.registerObserver(observer);
        }
    }

    @Override
    public void notifyObservers() {
        // Notification is handled by individual quackers when they quack
    }
}