1.  Introduction
1.1  Web Application (Webapp)
1.2  Hypertext Transfer Protocol (HTTP)
1.3  Apache Tomcat HTTP Server
2.  How to Install Tomcat 7 and Get Started with Java Servlet Programming
2.1  STEP 1: Download and Install Tomcat
2.2  STEP 2: Create an Environment Variable JAVA_HOME
2.3  STEP 3: Configure Tomcat Server
2.4  STEP 4: Start Tomcat Server
2.5  STEP 5: Develop and Deploy a WebApp
2.6  STEP 6: Write a "Hello-world" Java Servlet
2.7  STEP 7: Write a Database Servlet
2.8  (Advanced) Deploying Servlet using @WebServlet (Servlet 3.0 on Tomcat 7)
3.  How to Debug?