Original code (1) that caused findbugs complaint RT-24375 is still in the repo. There was an attempt to fix it (2) which caused regression RT-27731.

(1) return new Double(value*255).intValue();

(2) return (int)value * 255;

The fix was not correct as (int)value evaluates first to 0 or 1 which results in 0 or 255 instead of any number from 0 to 255.

Also both formulas doesn't use rounding which seems to be appropriate for this conversion.