About JQuantity


JQuantity is a project which has evolved from the Calculator.NET applet (called SuperCalc).
It is is something that I have been thinking about creating since long before Java -- but only with Java is it truly achievable.

The Problem:

The problem with floating point calculations on computers is that you never know how accurate your answers really are.  Even a double precision number barely has much accuracy and after several calculations, the accuracy is degraded.  For example, see Sun's Core Java Technologies Tech Tips, Feb. 4, 2003 (Variable Argument Lists, Floating Point Arithmetic) (or you can get it this way: http://bulkmail2.sun.com/CTServlet?id=1044376692299).