How can you obtain the data submitted in a form using Java?

To retrieve form submission data in Java, it is typically done through the use of the HttpServletRequest object. The specific steps are as follows:

1. Obtain the HttpServletRequest object in Servlet:

HttpServletRequest request = req;

1. Retrieve form submission data using the HttpServletRequest object.

String username = request.getParameter("username");
String password = request.getParameter("password");

The getParameter() method in the above code is used to retrieve the value of a specified parameter in the form.

1. Data processing can be carried out as needed or the data can be stored in a database.

It is important to note that before obtaining the data submitted in a form, make sure that the action attribute in the form points to the current path of the Servlet, so that the Servlet can receive the submitted data.