import java.util.PriorityQueue;

/**
   This program demonstrates a priority queue of work orders. The
   most important work orders are removed first.
*/
public class PriorityQueueDemo
{
   public static void main(String[] args)
   {
      PriorityQueue<WorkOrder> q = new PriorityQueue<>();
      q.add(new WorkOrder(3, "Shampoo carpets"));
      q.add(new WorkOrder(7, "Empty trash"));
      q.add(new WorkOrder(8, "Water plants"));
      q.add(new WorkOrder(10, "Remove pencil sharpener shavings"));
      q.add(new WorkOrder(6, "Replace light bulb"));
      q.add(new WorkOrder(1, "Fix broken sink"));
      q.add(new WorkOrder(9, "Clean coffee maker"));
      q.add(new WorkOrder(2, "Order cleaning supplies"));

      while (q.size() > 0)
      {
         System.out.println(q.remove());    
      }
   }
}