Java 6 Illuminated: An Active Learning Approach, 2nd Edition

12.14 Layout Managers: BorderLayout 905

In our ButtonHandler event handler (lines 51–69), the actionPerformed

method first determines the button that fired the event, translating the

source button to an integer value between 0 and 3. That value is assigned to

the local variable source. We want to allow only bids that are legal and only

from the player whose turn it is. If source is the bidder and bidding is

allowed (lines 65–66), we display a new bid (line 67); otherwise, we do not.

Figure 12.22 shows the Bridge bidding example running.

1 /** Using BorderLayout to display Bridge bidding

2 * Anderson, Franceschi

3 */

4

5 import javax.swing.*;

6 import