import java.util.LinkedList;

class Application {
    public static void main(String []args) {
        System.out.println("_______________ZAD1___________________");
        Canon canon = new Canon();
        canon.fire();
        System.out.println("_______________ZAD2___________________");
        Program program = new Program();
        program.main();

    }
}
class Canon {
    public boolean loaded;

    public void fire() {
        if (loaded) {
            System.out.println("Bum");
            loaded = false;
        } else {
            System.out.println("\"no bullet in canon\"");
            loaded = true;
            System.out.println("\"bullet loaded in a cannon\"");
        }
    }

    public void  loadedCanon() {
        loaded = true;

    }
}

class Program {
    public  void main () {
        Canon cannon1 = new Canon();
        Canon cannon2 = new Canon();
        Canon cannon3 = new Canon();
        Canon cannon4 = new Canon();

        LinkedList<Canon> cannonList = new LinkedList<Canon>();

        cannonList.add(cannon1);
        cannonList.add(cannon2);
        cannonList.add(cannon3);
        cannonList.add(cannon4);

        int i =1;

        for(Canon list : cannonList)
        {
            list.loadedCanon();
            System.out.println("loading cannon number: "+i++);

        }

    }
}