This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
please try to run my program,then you'll understand my problem. i thought a solution,that is use blank JLabel to fill up 3rd column for each rows and cheat GridLayout,but i think this is not a standard method.