There is no need to call it again and again for multiple requests.I am working with a usecase where there is a project containing servlet-filter acting as a middleware. init():This is called only once when the servlet is created.Servlet Instance is created by the web container when the servlet class is loaded.Servlet lifecycle describes how the servlet container manages the servlet object. So, it saves the memory by removing the overhead of creating a new process for each request. In Servlet, only a single instance of the requests runs concurrently.Servlets inherit the security provided by the Web Server.It builds and modifies the security logic for server-side extensions.The Servlet API inherits all the features of the Java platform.Servlets are platform independent as they can run on any platform.The Server response is then forwarded to the client.The client request is processed by the servlet and it sends the response back to the server.The Web server searches for the servlet and initiates it.A Request is sent by a client to a servlet container.The process of a servlet is shown below: Figure 1: servlet processing of user requests It can run on any web server integrated with a Servlet container. Servlets are used for creating dynamic web applications in java by extending the capability of a server. Sun Microsystems developed its first version 1.0 in the year 1997. Servlet is a Java programming language class, part of Java Enterprise Edition (Java EE). Internationalization 9.1 Methods 9.2 Example 10. Debugging 8.1 Message Logging 8.2 Java Debugger 8.3 Headers 8.4 Refresh 9. Exception Handling 7.1 Error Code Configuration 7.2 Exception- Type Configuration 8.
Session 6.1 Session Handling 6.2 Mechanism of Session Handling 6.3 Example 7.
Container 3.1 Services 3.2 Servlet Container Configurations 4. Introduction 1.1 Servlet Process 1.2 Merits 2.
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