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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.
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 · Initializing servlets parameters with annotations allows us to keep configuration and source code in the same place. In this section, we’ll demonstrate how to define and access initialization parameters that are bound to a specific servlet using annotations.
The init() method simply creates or loads some data that will be used throughout the life of the servlet. The init method definition looks like this − public void init() throws ServletException { // Initialization code...
The init() method is called only once throughout the life cycle of the servlet. The servlet will be available for service if it is loaded successfully otherwise the servlet container unloads the servlet.
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.
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.
