remove x from string using recursion in java

import java.sql.SQLOutput;

public class removeX {

    //write a java program to remove x from string using Recursion
    public static String removeX(String str){
        if(str.length() == 0){
            return str;
        }

        String ans = "";
         if (str.charAt(0) != 'x') {
             ans = ans + str.charAt(0);

         }
                String smallans = removeX(str.substring(1));
                return ans + smallans;


        }


    public static void main(String[] args) {
        System.out.println(removeX("absxsnd"));
    }

}