Math.round() ? please explain ?

[mark stone]

can someone explain what is the difference between these two ?
System.out.println(Math.round(3.5)); //4
System.out.println(Math.round(-3.5)); //-3
why what is the logic behind this ?

[Tarik Makota]

Basically:
Java Math.round() which by the way returns long always leans towards higher number in case of those in the midle like : 2.5, 3.5, -2.5, -3.5.
so if you have -5.5 first highest integer/non-decimal is -5.
if you have 6.5 it takes first highest integer which is 7.
Tarik

[sylvia weller]

...Java Math.round() which by the way returns long...

This is not always the case. There are two 'round' methods:
int <- Math.round(float)
long <- Math.round(double)
Sylvia

[Maulin Vasavada]

hi mark,
i read in Val's note that,
Math.round(n) = Math.floor(n+0.5);
check with ur example. its right.
regards
maulin