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25 lut 2015 · When servlet is initialised, init () method is called which initialize objects. What is the use of init () method when both constructor and init () serves the same purpose i.e initialization of object. In Init () method can be do initialization of some object like a database.
27 wrz 2008 · Constructor arguments cannot be specified on an interface, so the ServletContext needs to be specified on a normal method signature. This allows the application server to know how to initialize any Servlet implementation properly.
The first time the servlet loaded in Glassfish or Tomcat, the init method will be called and servlet stays in memory of the application server. The subsequent call will execute servlet and the init method will not be called. However the variable initialization is there, already initialized.
5 maj 2011 · In this three part tutorial, we understand how a servlet is initialized, the methods that get called and the objects used on initialization and execution.
As you already know, after the web server has created the servlet object and placed it in the container, it calls the servlet's init() method . You can override this method and initialize whatever you need in it.
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.
To understand the init() method, one must grasp the servlet lifecycle. From birth to death, a servlet goes through several stages: Instantiation: The servlet container loads the servlet class and creates an instance. Initialization: The init() method is invoked to initialize the instance.
