Hi BigBugBuzz,

I would look at the PVector class for storing the coordinates. adding and getting would look something like this:

1. ArrayList points = new ArrayList();
2. for (int i = 0; i<10; i++){
3.       PVector point = new PVector(xvalue, yvalue);
4.       points.add(point);
   
5. }
6. println(points.size()); //returns 10
7. for (int i = 0; i<points.size(); i++){
8.       PVector pointFromArray = (PVector) points.get(i); //ArrayLists don't know what they store, so we remind it.
   
9.       int pointXvalue = pointFromArray.x;
10.       int pointYvalue = pointFromArray.y;
    
11. }

check out the ArrayList example here: http://processing.org/reference/ArrayList.html
and the PVector here: http://processing.org/reference/PVector.html

by the way, ArrayLists take a lot more memory and processor power to work with, you can turn any class into an array by adding brackets. the only catch is you must know the size of your array when you create it. so for the same PVectors, it would look something like this:

1. PVector[] points;
2. points = new PVector[10];
3. for (int i = 0; i < points.length; i++ ) {
4.       points[i] = new PVector(pointx, pointy);
5. }
6. for (int i = 0; i<points.length; i++) {
7.       int xPoint = points[i].x;
8.       int yPoint = points[i].y;
9. }

like I said, the only catch is that you have to set the number of values you want to store when you create the PVector array, otherwise about the same, and much faster.

Good Luck!
ak