Question

I know is simple and I know that is asked many times but still I couldn’t find the thing I am looking for.

I have a value from 0 to 500 it is a int.
I want to have an output from 0x00 to 0xFF.

public void method(int i)// 0-500
{
return the_proportional_value_in_hex_in_range_0_to_ff;
}

can someone writhe me a converter from this kind. Thanks

EDIT

I DO NOT wanted a exact conversion, I just wanted a SCALED conversion, and @Mac answered exactly what I needed.

Answer 1

int scaled = (i * 255) / 500;

i / 500 scales i to the range 0 ... 1, then multiply by 255 (i.e. 0xFF) scales that to 0 ... 255. Doing it the other way around (multiply then divide) is just to prevent numeric underflow on the divide.

To print as hex, you could use System.out.printf("%x", scaled);. I say print, because talking about a “hex value” isn’t terribly useful.