Java tutorial
import java.util.PriorityQueue; public class Main { public static void main(String args[]) { PriorityQueue<Integer> prq = new PriorityQueue<Integer>(); for (int i = 0; i < 10; i++) { prq.add(i); } System.out.println(prq); // check if queue contains 5 boolean b = prq.contains(5); System.out.println("Priority queue contains 5: " + b); } }