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Equation of stock trading simplified to game of moving resizing balls
...Its the same math as Matching Pennies and Odds And Evens game which are Rock Paper Scissors with 2 choices instead of 3 (buy vs sell). You see this in the size of balls changing depending where they move. Think of it as a 2d seesaw surface that never tilts because the masses of balls are adjusted to always balance.
This is the early start of a game based on that econ theory. Econ is boring in number and symbol form, but as a realtime game its more like dancing.
A library to generate the bidimensional barcode PDF417.
The generated result is a byte array representing the barcode image that can be included in the users application.
ThunderGraph is another java charting library intended to draw 2D graphs. Additionally, it contains a package that presents a live component implementing zoomable, scrollable and 'hintable' graph. Written for JDK 1.1+, it may be used in MS IE applets.