Finding co ordinates, hit and edge of screen

Question

1. I have created a rectangle called cerealBox. Is it possible to get some X,Y co odinates for cerealBox , so i can keep track of where is is on the screen. ?
2.What is hit usefull for , is it for detecting weather shapes have hit the edge of the screen or other shapes or both?
3.What is the best method of detecting weather a shape has gone past the edge of the screen?, are there facilities in java dedicated to this task, if so, please could you tell me what they are called.
Rectangle cerealBox = new Rectangle(0, 0, 5, 5);
g2.draw(cerealBox);

Answer 1

Let me get the silly answer out of the way: The first two parameters are the x,y coordinates of the rectangle. But, seriously, If you're asking for x,y in screen coordinates look at SwingUtilities class it has methods to deal with converting coordinate systems.
The hit method is basically what you describe. I haven't tried it for screen edge detection but you might be able to make it work.
You can brute force the off screen detection by getting screen size from Toolkit. You know the Rectangle's size and location so it shouldn't be too hard to figure out if any of the Rectange is off-screen.
Cheers
DB