Radio Button value retrieval using servlets

I’m quite new to the process of web development, so I apoligise if this seems a really silly question.

Basically, I’m creating a servlet whereby a user will answer ‘yes’ or ‘no’ to three 3 questions, and then submit the form.

What I wish to do is to retrieve the value of each button, and store it a data structure such as an array, where I can perform a check on it. However, I am a little lost at this point. Is there a method in java I can call on each button, something along the lines of getValue()?

A look at the code ive developed so far:

out.println("<FORM ACTION="Game" METHOD = "POST">" +
        "<b>Question 1: Are you over the age of 25?. </b><br> <br>" +

        "<input type = "radio" name = "rad1Q1" onclick = "getAnswer('a')"> Yes " +
        "<input type = "radio" name = "rad2Q1" onclick = "getAnswer('b')"> No<br>" +

        "<br><br><b>Question 2: Are you from planet earth. </b><br> <br>" +

        "<input type = "radio" name = "rad1Q2" onclick = "getAnswer('a')"> Yes " +
        "<input type = "radio" name = "rad2Q2" onclick = "getAnswer('b')"> No <br>"

Answer

input values in the html form will be submitted as request parameters to the servlet. In the servlet where the form is submitting to, you can do

String rad1Q1 = request.getParameter("rad1Q1");

to get the selected value.

I do suggest you do put the html code in the jsp tho instead of servlet to make the code more clear and easier to maintain.