Java Round up the decimal to integer

Question

    cyan = (white - (red / 255)) / white*100.0;
    magenta = (white - (green / 255)) / white*100.0;
    yellow = (white - (blue / 255)) / white*100.0;
    black = (1 - white)*100.0;

I get my program executed with the decimal number, how can I change to the integers and get the whole numbers??

Maybe you need `floor()` or `ceil()`. Have a look here https://www.guru99.com/math-java.html — Eklavya, May 07 '20 at 08:49

score 0 · Answer 1 · answered May 07 '20 at 09:01

0

If you need to round up a decimal, you should use (int) Math.ceil(x); if you need to round to the biggest integer:

System.out.println((int) Math.ceil(2.1)); // prints 3

Otherwise you should use Math.round(x) which returns integer value closest to the nearest integer:

System.out.println(Math.round(2.1)); // prints 2
System.out.println(Math.round(2.7)); // prints 3

answered May 07 '20 at 09:01

Nowhere Man

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You're welcome! I'd be glad if you could this answer as accepted. Thank you! – Nowhere Man May 09 '20 at 07:38

Java Round up the decimal to integer

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