Java Program To Find Area Of Equilateral Triangle

import java.util.Scanner;
public class demo1
{
   public static void main(String args[]) 
    {         
          Scanner input= new Scanner(System.in);
          System.out.println("Enter the side of the Triangle:");
          double a= input.nextDouble();
          double  area=(Math.sqrt(3)/4)*(a*a);
          System.out.println("Area of Triangle is: " + area);      
     }
}