How to find sum of digits in an alpha numeric value

import java.util.Scanner;

public class SumofdgtsinAlphanumericValue {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		@SuppressWarnings("resource")
		Scanner inpAlphaNumeric= new Scanner(System.in);
		
		//Input an alphanumeric value
		System.out.println("Enter an alphanumeric value=");
		String strValue=inpAlphaNumeric.next();
		System.out.println("The String value is="+strValue);
		
		//Find out the Length
		float sumDigits=0;
		int lenOfStr=strValue.length();
		while (lenOfStr > 0) {
	if (Character.isDigit(strValue.charAt(lenOfStr-1)))
			sumDigits=sumDigits+Character.getNumericValue(strValue.charAt(lenOfStr-1));
			lenOfStr=lenOfStr-1;
		}
		System.out.println("The sum of digits in the given string is "+strValue+" is="+sumDigits);		
	}
}