How do i extract input values with the same name into a servlet? [duplicate]

Answer 1

The Javadoc for getParameter clearly says

You should only use this method when you are sure the parameter has only one value. If the parameter might have more than one value, use getParameterValues(java.lang.String).

And getParameterValues returns a String[], which is what you want.

Answer 2

You can use

getParameterValues()

String[] productIDs= request.getParameterValues("productID");