Servlets | Servlet Tutorial
Servlet technology is used to create a web application (resides at server side and generates a dynamic web page).
Servlet technology is robust and scalable because of java language. Before Servlet, CGI (Common Gateway Interface) scripting language was common as a server-side programming language. However, there were many disadvantages to this technology. We have discussed these disadvantages below.
There are many interfaces and classes in the Servlet API such as Servlet, GenericServlet, HttpServlet, ServletRequest, ServletResponse, etc.
What is a Servlet?
Servlet can be described in many ways, depending on the context.
What is a web application?
CGI (Common Gateway Interface)
CGI technology enables the web server to call an external program and pass HTTP request information to the external program to process the request. For each request, it starts a new process.
Disadvantages of CGI
There are many problems in CGI technology:
Advantages of Servlet
There are many advantages of Servlet over CGI. The web container creates threads for handling the multiple requests to the Servlet. Threads have many benefits over the Processes such as they share a common memory area, lightweight, cost of communication between the threads are low. The advantages of Servlet are as follows:
Servlet with IDE
Attribute in Servlet
Event and Listener
Servlet Basics Quiz
Servlet Advance Quiz
Servlet Misc. Quiz