Swing code help

Question

Guys,
Thanks first of all to those of you who have been a great help over the past few days. I have one last problem that i'm not sure how to tackle.
I'm doing a theatre booking system which has a GUI. My main screen is using a card layout.
I have a theatre class, a booking class, performance and seating classes. I want to implement code for making a booking which will display a graphical representation of the seats for a particular section of the theatre. My seating is divided into stalls, royal circle, upper circle etc. Each of these blocks of seating has x rows and y columns.
I want to show on a panel all seats. Booked ones coloured red, free ones coloured green - or some other approach which would be just as effective. I want to click a seat or several seats to book them for one customer.
What approach is best for this problem? How should I draw the seats? Line drawings? Components? Suggestions on how to tackle this problem please.
Many thanks.

Answer 1

How bout this:
Create your own subclas of Shape (sub class Rectangle if you just want your seats as rectangles or if they need to be a more complicated shape use Polygon) but add your own field colour (of type Color!, defaulted to green) which has a getter and a setter method for colour (or just setred, setgreen methods) and just one constuctor which takes a location. size and colour are set by default in the constructor. Iterate over your x and y axis creating these and storing them in an array, something line:
int xmax = 5;
int ymax = 3;
int gap = 5;
Seat[] seats = new Seat[xmax * ymax]; //Where seat is you Shape (also array should be class level)
int count = 0;
for (int  x = 0; x < xmax; x++){
   for (int y = 0; y < ymax; y++){
       seats[count] = new Seat( gap * x, gap * y); //Obviously this would be alot more complicated if you use Polygon as all points would need offsetting by x, y.
}then in your draw method:
for (allseats using i) {
     Seat seat = seats;
g2.setColor(seat.getColour());
g2.draw(seat)
Add a mouselistener to the component you are drawing on which checks if a seat was clicked on:
mouseClicked(MouseEvent me {
for (allseats using i) {
     Seat seat = seats;
if (seat.contains(me.getPoint()) {
seat.setColour(Color.RED);
//And anything else you want to do
repaint();
None of this is very thought through and all just typed straight into reply box so probably loads of little mistakes and improvements but somewhere to start from perhaps.
Hope this helps,
Alex.