How to identify whether narcissistic-number or not in java by jayanthi ganesh

import java.util.*;

class NarcissisticNo
{

public static void main(String []args)
{
String st = "1634";
System.out.print(getResult(st));
}

static String getResult(String st)
{
int sum = 0;
int length = st.length();

for (int i = 0; i < length; i++)
{
   sum = sum + (int)Math.pow(st.charAt(i) - '0', length);
}

int number = Integer.parseInt(st);

if (number == sum)
    return "yes";
else
    return "no";

}
}