import java.util.LinkedList;
import java.util.Queue;

/**
   This program simulates a print queue. Note that documents are printed
   in the same order as they are submitted. 
*/
public class QueueDemo
{
   public static void main(String[] args)
   {
      Queue<String> jobs = new LinkedList<>(); 
      jobs.add("Joe: Expense Report #1");
      jobs.add("Cathy: Meeting Memo");
      System.out.println("Printing " + jobs.remove());
      jobs.add("Cathy: Purchase Order #1");
      jobs.add("Joe: Expense Report #2");
      jobs.add("Joe: Weekly Report");
      System.out.println("Printing " + jobs.remove());
      jobs.add("Cathy: Purchase Order #2");

      while (jobs.size() > 0)
      {
         System.out.println("Printing " + jobs.remove());
      }
   }
}