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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.
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.
12 sty 2022 · Servlet – Load on startup. The element ‘ load-on-startup ‘ is used to load the servlet. The ‘ void init () ‘ method of servlet gets executed when the server gets started. The element content of ‘load-on-startup’ is Integer. if the integer is negative: The container loads servlet at any time.
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.
This Test will cover the basic concepts of Servlet Technology, including Http protocol, Http Method, Web intoduction etc.
3 sie 2022 · Servlet Class Initialization - Once the servlet class is loaded, container initializes the ServletContext object for the servlet and then invoke its init method by passing the servlet config object. This is the place where a servlet class transforms from normal class to servlet.
