Java rounding the results of a division when it shouldn't be

Question

So I have some code for scaling graphics to the size of a users screen by dividing the size of an \'Ideal\' screen by the size of the users screen. Hers is a code snippet of wha

Answer 1

In these lines

scaleFactorWidth = 2880 / ui.getWidth();
scaleFactorHeight = 1800 / ui.getHeight();

The calculation itself is Integer-based (according to the later calls of Integer.toString()). Just the result is then casted to double.

Use this code instead, in order to have the actual computation use double values:

scaleFactorWidth = 2880.0 / ui.getWidth();
scaleFactorHeight = 1800.0 / ui.getHeight();

or

scaleFactorWidth = 2880.0 / (double)ui.getWidth();
scaleFactorHeight = 1800.0 / (double)ui.getHeight();