How to convert date formt from MM/dd/yyyy to yyyy/MM/dd ?

Question

I am sending MM/dd/yyyy format from frontend to the mysql workbench database but its not storing the date as  MM/dd/yyyy format. then how to convert this to yyyy/MM/dd in jsp.

I have tried this code but getting error please reply soon its urgent.

<%String start_date = "MAY-08-2017";

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

Date d = formatter.parse(start_date);

System.out.println(d);

System.out.println(formatter.format(d));%>