java web application without web.xml - servlets 3.0

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

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+package com.baeldung.servlets;
+
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+@WebServlet(urlPatterns = "/counter", name = "counterServlet")
+public class CounterServlet extends HttpServlet {
+
+    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
+        response.setContentType("text/html");
+
+        PrintWriter out = response.getWriter();
+
+        int count = (int)request.getServletContext().getAttribute("counter");
+
+        out.println("Request counter: " + count);
+    }
+
+}

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

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+package com.baeldung.servlets;
+
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+@WebServlet(urlPatterns = "/uppercase", name = "uppercaseServlet")
+public class UppercaseServlet extends HttpServlet {
+
+    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
+        String inputString = request.getParameter("input").toUpperCase();
+
+        response.setContentType("text/html");
+
+        PrintWriter out = response.getWriter();
+
+        out.println(inputString);
+    }
+}