maven cleanup work

javax-servlets/src/main/java/com/baeldung/servlets/FormServlet.java

@@ -0,0 +1,47 @@
+package com.baeldung.servlets;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+@WebServlet(name = "FormServlet", urlPatterns = "/calculateServlet")
+public class FormServlet extends HttpServlet {
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response)
+            throws ServletException, IOException {
+
+        String height = request.getParameter("height");
+        String weight = request.getParameter("weight");
+
+        try {
+            double bmi = calculateBMI(Double.parseDouble(weight), Double.parseDouble(height));
+
+            request.setAttribute("bmi", bmi);
+            response.setHeader("Test", "Success");
+            response.setHeader("BMI", String.valueOf(bmi));
+
+            RequestDispatcher dispatcher = request.getRequestDispatcher("index.jsp");
+            dispatcher.forward(request, response);
+        } catch (Exception e) {
+
+            response.sendRedirect("index.jsp");
+        }
+    }
+
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response)
+            throws ServletException, IOException {
+
+        // do something else here
+    }
+
+    private Double calculateBMI(Double weight, Double height) {
+
+        return weight / (height * height);
+    }
+}