/*
Round Java float and double numbers using Math.round
This java example shows how to round given float or double number using round
method of Java Math class.
*/
public class RounFloatDoubleNumbersExample {
public static void main(String[] args) {
/*
* To round float number, use
* static int round(float f) method of Java Math class.
*
* It returns closest int number to the argument.
* Internally, it adds 0.5 to the argument, takes floor value and casts
* the result into int.
*
* i.e. result = (int) Math.floor( argument value + 0.5f )
*/
//returns same value
System.out.println(Math.round(10f));
// returns (int) Math.floor(10.6) = 10
System.out.println(Math.round(20.5f));
//returns (int) Math.floor(20.5 + 0.5) = 30
System.out.println(Math.round(20.5f));
//returns (int) Math.floor(-18.9) = 19
System.out.println(Math.round(-19.4f));
//returns (int) Math.floor(-23) = -23
System.out.println(Math.round(-23.5f));
/*
* To round double numbers, use
* static long round(double d) method of Java Math class.
* It returns long.
*/
}
}
/*
Output would be
10
21
21
-19
-23
*/
