[insidious]

Thanks for your comment @insidious15 much appreciated this is a good idea you have here but i'm still on a really early version of this calculator and my whole project is about GUI wasn't much interested in the calculation but yeah your right going for Strings to do the calculation looks good but i think using long instead of int should be enough for a small project (MAX_VALUE of long is 9,223,372,036,854,775,807 ).
i'll update the thread as soon as i'm done with my second version,am already done with the gui and it looks way better.
Still have the calculation to work on .

Nice! Well good luck with it. GUI's were never my thing, have always preferred a CLI.

Cool that you're doing it though, good luck!