pbo-3b

import java.util.*;
import javax.swing.*;

public class Lot
 {
   private final int number;
   private String description;
   private Bid highestBid;

   public Lot (int number, String description)
   {
     this.number = number;
     this.description = description;
     this.highestBid = null;
   }
   /**
    * Attempt to bid for this lot.
    * A succesful bid must have a value higher than any existing bid.
    * @param bid A new bid
    * @return true if succesful. false otherwise
    */
   public boolean bidFor(Bid bid)
   {
     if (highestBid==null)
     {
       highestBid=bid;
       return true;
     }
     else if (bid.getValue() > highestBid.getValue())
     {
       highestBid = bid;
       return true;
     }
     else
     {
       return false;
     }
   }
   /**
    * @return A string representation of this lot's details.
    */
   public String toString()
   {
     String details = number + ": " + description;
     if (highestBid != null)
     {
       details += " Bid: " + highestBid.getValue();
     }
     else
     {
       details += " (No bid))";
     }
     return details;
   }
   /**
    * @return The lot's number.
    */
   public int getNumber()
   {
     return number;
   }
   /**
    * @return The lot's description.
    */
   public String getDescription()
   {
     return description;
   }
   /**
    * @return The highest bid for this lot.
    *  This could be null if there is no current bid.
    */
   public Bid getHighestBid()
   {
     return highestBid;
   }
}