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The Java Math rint() method is used to return 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 arg)

Parameters

arg Specify a double value.

Return Value

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

Exception

NA.

Example:

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

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

❮ Java Math Methods