public String HapusHuruf(String strQty){
        char [] data = TitikHanya2(strQty).toCharArray();
        //char [] data = strQty.toCharArray();
        String newStrQty = "";
        for (char c : data){
            if (Character.isDigit(c) || c == '.') {
                newStrQty = newStrQty + String.valueOf(c);
            }
        }
        return newStrQty;
    }