Java Data Type Tutorial - Java Math.round(double a)

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Syntax

Math.round(double a) has the following syntax.

public static long round(double a)

Example

In the following code shows how to use Math.round(double a) method.

//  ww  w .j av a2s  .  co m
public class Main {

   public static void main(String[] args) {
      double x = 123456.7;
      double y = -123.45;

      // find the closest long for these doubles
      System.out.println("Math.round(" + x + ")=" + Math.round(x));
      System.out.println("Math.round(" + y + ")=" + Math.round(y));

   }
}

The code above generates the following result.

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