What is servlet config and context?
ServletConfig is an object containing some initial parameters or configuration information created by Servlet Container and passed to the servlet during initialization. ServletConfig is for a particular servlet, that means one should store servlet specific information in web. xml and retrieve them using this object.
What is the difference between servlet configuration and servlet context?
ServletConfig is used by only single servlet to get configuration information from web. xml whereas ServletContext is used by multiple objects to get configuration information from xml files.
What is servlet context?
An object of ServletContext is created by the web container at time of deploying the project. This object can be used to get configuration information from web. xml file. There is only one ServletContext object per web application. If any information is shared to many servlet, it is better to provide it from the web.
What is the use of servlet config?
ServletConfig object is created by web container for each servlet to pass information to a servlet during initialization. This object can be used to get configuration information from web. xml file. when to use : If you want to share information to all sevlet, it a better way to make it available for all servlet.
Where is servlet used?
A servlet is a Java programming language class that is used to extend the capabilities of servers that host applications accessed by means of a request-response programming model. Although servlets can respond to any type of request, they are commonly used to extend the applications hosted by web servers.
What is a HTTP servlet?
A servlet is a Java class that runs in a Java-enabled server. An HTTP servlet is a special type of servlet that handles an HTTP request and provides an HTTP response, usually in the form of an HTML page. WebLogic Server fully supports HTTP servlets as defined in the Servlet 2.3 specification from Sun Microsystems.
What is a servlet request?
Defines an object to provide client request information to a servlet. The servlet container creates a ServletRequest object and passes it as an argument to the servlet’s service method. A ServletRequest object provides data including parameter name and values, attributes, and an input stream.
What is API in servlet?
servlet. http packages represent interfaces and classes for servlet api. The javax. servlet package contains many interfaces and classes that are used by the servlet or web container. These are not specific to any protocol.
What is the use of Servlet API jar?
The servlet-api jar is a library which contains the interfaces and classes of the Servlet API specification. The servlet-api jar contains only the interface (the API) of the Servlet Specification, so you can use it to develop your web application.