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Servlet container calls servlet init() method before handling client requests. It is called just one times after servlet is created. By default it does nothing. You can override this method and it is also good for performing one-time activities. Such as database connection or reading configuration data etc.
19 paź 2021 · Initializing a Servlet: After the Servlet is instantiated successfully, the Servlet container initializes the instantiated Servlet object. The container initializes the Servlet object by invoking the Servlet.init (ServletConfig) method which accepts ServletConfig object reference as parameter.
8 sty 2024 · In this example, we’ve shown how to define servlet initialization parameters by using annotations, and how to access them with the getInitParameter() method.
13 sty 2022 · To get started with Servlets, let’s first start with a simple Servlet application i.e LifeCycle application, that will demonstrate the implementation of the init(), service() and destroy() methods.
The servlet lifecycle mainly includes three methods: init(), service(), and destroy(). Let's discuss these methods in detail: init() method: This method is called by the servlet container to indicate to a servlet that the servlet is being placed into service. The servlet container calls the init method exactly once after instantiating the servlet.
A Servlet is an interface defined in a javax.servlet package. It declares three essential methods for the life cycle of a servlet, init(), service() and destroy(). When the servlet is called for the first time, the Servlet Container loads the servlet class and calls its init() method.
The init method is quite simple: it calls the super.init method to manage the ServletConfig object and log the initialization, and sets a private field. If the BookDBServlet used an actual database, instead of simulating one with an object, the init method would be more complex.
