How to find out if two JComponents overlap?

I wanted to create very simple game, another version of arcanoid (or krakout) where player tries to hit bouncing ball with paddle so the ball will break the wall made of small bricks. so far came up with an idea that paddle will be JComponent controlled by mouse, ball will be also JComponent controlled by mouse and after a while got it ready and coded. before i'll go to bricks (which i'm also planning to do as JComponents :) i wanted to know
- how to find out when the paddle and the bouncing ball hit each other and if theres any method that returns boolean (or sth..) when any part of those components overlap so i can change the direction of the ball and take particular bricks off the screen (or will have to do it manually somehow..)?
- also wanted to know if my thinking is correct and douing it with separate classes, having the ball as a thread (changing its .location(..) on the way to move the ball) ,and controlling paddle (another class) just by MouseMotionListener is correct way to do it or there is some other standard aproach to that kind of a program
- how to control if mouse is leaving particular JPanel so i can have user stopped before and keep him inside of that Jpanel, unless he will press particular button or do something
thanks in advance for any help and sorry for probably quite confuzing explanation

Well, yes, because this solution uses the bounds of the JComponent. If you want more complicated shapes, you could define a polygon for instance (java.awt.Polygon) and use it's intersects method, but then the other shape would still need to be a rectangle.
Other options include GeneralPath class and Area class, this would not limit you to rectangles. With the first class you can also draw arbitrary shapes. With the second you can do intersections, unions etc.
Have a look at http://java.sun.com/docs/books/tutorial/2d/TOC.html#display (Java2d )
Mind you, this is more complicated!
Rene'

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*****& Transaction code      : ZTCODE_USAGE                           *
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*****& Deveopment start date : 26 th Dec 2011                         *
*****& Development Package   : ZDEV                                   *
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