Java :: Moving From Processing To Flash CS5?

I've been using Processing for around two years now, and I really like it. However, I feel like Flash is a bit more useful for coding games, as it's more universal and flexible. I'm starting to feel like I have no idea what I'm doing, and I really don't get any of the concepts like movie clips and the stage and so forth. In Processing, to make, say, a ball, I might make this:

Ball[] ballArray = new Ball[ 0 ]; //Array to store each ball in
void setup()
{
size( 400, 400 );

[code].....

And that would let me create as many instances as I like, anywhere I like.I haven't the faintest clue how to make a comparable applet in Flash.I've tried making a 'ball' class in a separate .as file, but it gives me an error about too many arguments. I also don't know how to draw a shape directly to the screen.