Java Math - rint() Method

The java.lang.Math.rint() method returns the double value that is closest to the argument and equal to a mathematical integer. In special cases it returns the following:

• If the argument value is already equal to a mathematical integer, then the result is the same as the argument.
• If the argument is NaN or an infinity or positive zero or negative zero, then the result is the same as the argument.

Syntax

public static double rint(double a)

Parameters

Return Value

Returns the double value that is closest to the argument and equal to a mathematical integer.

Exception

NA.

Example:

In the example below, rint() method returns the double value that is closest to the given argument and equal to a mathematical integer.

import java.lang.*;

public class MyClass {
 public static void main(String[] args) {
  System.out.println(Math.rint(48.45));   
  System.out.println(Math.rint(48.55));   
 }
}

The output of the above code will be:

48.0
49.0