I got project do convert from cm to inch. I did it: how can i round my number with Math.round? 

public class Centimer_Inch 
{ 
public static void main (String[] args) 
{ 
        // 2.54cm is 1 inch 
       Scanner cm = new Scanner(System.in); //Get INPUT from pc-Keyboard 
       System.out.println("Enter the CM:"); // Write input 
       double centimeters = cm.nextDouble(); 
       double inches = centimeters/2.54; 
       System.out.println(inches + " Inch Is " + centimeters + " centimeters"); 
     } 
}