D function of Shop class

Shop.d.java

    private String d() {
        try {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("ddMM", Locale.getDefault());
            StringBuilder stringBuilder = new StringBuilder();
            stringBuilder.append(this.b.k());
            stringBuilder.append(simpleDateFormat.format(Long.valueOf(System.currentTimeMillis())));
            String stringBuilder2 = stringBuilder.toString();
            int i = 0;
            int parseInt = Integer.parseInt(this.b.k().substring(0, 2));
            int parseInt2 = Integer.parseInt(this.b.k().substring(2, 4));
            int parseInt3 = Integer.parseInt(this.b.k().substring(4, 6));
            StringBuilder stringBuilder3 = new StringBuilder();
            byte[] bytes = stringBuilder2.getBytes();
            int length = bytes.length;
            while (i < length) {
                stringBuilder3.append(String.valueOf((bytes[i] + parseInt2) * parseInt));
                i++;
            }
            stringBuilder2 = stringBuilder3.toString();
            stringBuilder = new StringBuilder();
            stringBuilder.append(stringBuilder2);
            stringBuilder.append(parseInt3 * stringBuilder3.length());
            return stringBuilder.toString();
        } catch (Exception e) {
            e.printStackTrace();
            return "com.burockgames.no_thing";
        }
    }