import java.util.ArrayDeque;
import java.util.Queue;

public class App {
    public static void main(String[] args) throws Exception {
        Queue<Integer> queue = new ArrayDeque<>();
        queue.add(35);
        queue.add(25);
        queue.add(48);

        System.out.println(queue.size());
        
        //Kivesszük az elsőnek betett elemet:
        System.out.println(queue.poll());
        System.out.println(queue.size());
        System.out.println(queue.isEmpty());
    }
}