public class TestQueue {
  
  public static void main(String[] args) {
  
    PriorityQueue queue;
    
    if (args.length == 1 && (args[0].equals("O") || args[0].equals("U"))) {
     
      if (args[0].equals("O"))
        queue = new OrderedQueue();
      else
        queue = new UnorderedQueue();
      
      System.out.println("Queue is empty: " + queue.isEmpty());
      System.out.println("Maximum priority: " + queue.maxPriority());  
      queue.addJob(23, "#32458");
      queue.addJob(45, "#32458");
      queue.addJob(50, "#45732");
      queue.addJob(15, "#97698");
      queue.addJob(28, "#84844");
      queue.addJob(30, "#34556");
      queue.addJob(23, "#12980");
      
      System.out.println("\nQueue in order: \n" + queue.listInOrder());
      System.out.println("Queue in reverse: \n" + queue.listInReverse());
      
      System.out.println("\nNumber of jobs: " + queue.numberOfJobs());
      System.out.println("Maximum priority: " + queue.maxPriority());
      
      System.out.println("Remove highest priority job: " + queue.removeHighestPriorityJob());
      System.out.println("\nQueue in order: \n" + queue.listInOrder());
      
      System.out.println("Remove job #84844");
      if (queue.removeJob("#84844"))
        System.out.println("Job removed");
      else
        System.out.println("Job not removed");
      System.out.println("\nQueue in order: \n" + queue.listInOrder());      
      System.out.println("Remove job #77777");
      if (queue.removeJob("#77777"))
        System.out.println("Job removed");
      else
        System.out.println("Job not removed");
      System.out.println("\nQueue in order: \n" + queue.listInOrder()); 
      
      System.out.println("Remove all jobs in order of priority");
      while (!queue.isEmpty()) 
        System.out.println("Remove job " + queue.removeHighestPriorityJob());
	
      System.out.println("\nQueue in order: \n" + queue.listInOrder());
      
             
      queue.addJob(23, "#32458");
      queue.addJob(45, "#32458");
      queue.addJob(50, "#45732");
      queue.addJob(15, "#97698");
      queue.addJob(30, "#84844");
      System.out.println("Queue in order: \n" + queue.listInOrder());
      System.out.println("\nClear queue."); 
      queue.clear();
      System.out.println("Number of jobs: " + queue.numberOfJobs()); 
    }
    else
      System.out.println("usage: java TestQueue O|U");
  }
}