Why init param in web.xml

That question no-where discusses the difference between those two params.. It's just about properties loaded in the two contexts.. I stopped at the title, my bad. Add a comment. Active Oldest Votes. Improve this answer. Neeraj 2, 18 18 silver badges 33 33 bronze badges.

Sai Upadhyayula Sai Upadhyayula 2, 3 3 gold badges 21 21 silver badges 33 33 bronze badges. Consider the below definition in web. Consider the following definition in web. Ankur Piyush Ankur Piyush 1 1 silver badge 9 9 bronze badges. Adeel Ahmad Adeel Ahmad 15 15 bronze badges.

Single servlet versus multiple servlets. An empty Enumeration does not contain any element. To get the value of a context initialization parameter , the getInitParameter method of ServletContext , can be used. The getInitParameter method of ServletContext , has the following signature :. If the specified name does not exit , then getInitParameter , will return null.

For example , the following jsp servlet , named : index. A context parameter , cannot be defined by using web annotation , inside a servlet , so it cannot be defined in this way :. In this code fragment , what was defined , is an initialization parameter , for a servlet.

A servlet initialization parameter , applies only to a specific servlet , whereas a context initialization parameter , applies to the whole web application. In addition to defining context parameters using : web. The setInitParameter method , can be used inside a class , which implements the : ServletContainerInitializer interface, or the ServletContextListener interface. Or, instead of specifying a servlet class, you can specify a JSP.

The servlet element also contains definitions for initialization attributes and security roles for the servlet. The second entry in web. Servlet mapping controls how you access a servlet. The following examples demonstrate how you can use servlet mapping in your Web application. In the examples, a set of servlet configurations and mappings from the web. For more information on servlet mappings, such as general servlet mapping rules and conventions, refer to Section 11 of the Servlet 2.

ServletServlet can be used to create a default mappings for servlets. Each Web application has a default servlet. This default servlet can be a servlet that you specify, or, if you do not specify a default servlet, WebLogic Server uses an internal servlet called the FileServlet as the default servlet. In this example, we are getting all the initialization parameter from the web. JavaTpoint offers too many high quality services.

Mail us on [email protected] , to get more information about given services. Please mail your requirement at [email protected] Duration: 1 week to 2 week. Servlet Tutorial. War File welcome-file-list Load on startup. Servlet Collaboration. RequestDispacher sendRedirect. Servlet Advance Session Tracking. ServletConfig Interface Methods of ServletConfig interface How to get the object of ServletConfig Syntax to provide the initialization parameter for a servlet Example of ServletConfig to get initialization parameter Example of ServletConfig to get all the initialization parameter.

IOException; import java. PrintWriter; import java. Enumeration; import javax. ServletConfig; import javax.