how to find any root of a number in java code example

Example: how to do 4th root java

import java.io.*;import 
java.util.Scanner;import
java.lang.*;
class FourthRoot
{
  public static void main(String[] args)   
    {    
    	Scanner in = new Scanner(System.in);    
    	double p,a=10;    
    	p=Math.pow(a,(0.25));   
    	System.out.println("Fourth Root "+p);  
  	}
}