The example below show you some methods of the `Math`

class that can be use to round the value of a number. These methods are `Math.ceil()`

, `Math.floor()`

and `Math.round()`

.

package org.kodejava.example.math; public class GetRoundingValueExample { public static void main(String[] args) { Double number = 1.5D; // // Get the smallest value that is greater than or equal to the // argument and is equal to a mathematical integer // double roundUp = Math.ceil(number); System.out.println("Result of rounding up of " + number + " = " + roundUp); // // Get the largest value that is less than or equal to the // argument and is equal to a mathematical integer // double roundDown = Math.floor(number); System.out.println("Result of rounding down of " + number + " = " + roundDown); // // Get the closest long value to the argument // long round1 = Math.round(number); System.out.println("Rounding result of " + number + " (in long) = " + round1); // // Get the closest int value to the argument // int round2 = Math.round(number.floatValue()); System.out.println("Rounding result of " + number + " (in int) = " + round2); } }

Here are the result of the program:

Result of rounding up of 1.5 = 2.0 Result of rounding down of 1.5 = 1.0 Rounding result of 1.5 (in long) = 2 Rounding result of 1.5 (in int) = 2

### Wayan Saryada

Programmer, runner, recreational diver, currently living in the island of Bali, Indonesia. Mostly programming in Java, creating web based application with Spring Framework, Hibernate / JPA.

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