Overview: I changed XYseries to accept a list and functions as opposed to forcing clients to create multiple arrays on each create/update.

This is the beginning but I've run out of time tonight. The double[] constuctors still work but, wonce you move to jdk8 you can do something like:

class Foo { double x; double y; double bubbleSz; }

List list= ...
XYSeries ser=new XYSeries("s1", list, axisType
, (list, rowi, obj) -> { return ((Foo)obj).x; }
, (list, rowi, obj) -> { return ((Foo)obj).y; }
, (list, rowi, obj) -> { return ((Foo)obj).bubbleSz; }
);
Had to comment out some code as some libs didn't import into eclipse properly. Hope you can find the time to integrate this and update to jdk8. CHeers!