When is servlet constructor called

Of course constructor no-arg constructor is called by container to create instance of Servlet.. So Container pass this implementation as an argument to the init method of Servlet to complete its servletness. When a constructor is used? Since Why not declare a constructor in servlet? Last modified on July 25th, by Joe. Popular Articles What is servlet mapping? Servlet Life Cycle What happens if you call destroy from init in java servlet?

Add a comment. Active Oldest Votes. Quoting from one of the more illuminating posts: The init method is typically used to perform servlet initialization--creating or loading objects that are used by the servlet in the handling of its requests. Mahboob Ali Mahboob Ali 8 8 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

Email Required, but never shown. The Overflow Blog. Root cause: java. InstantiationException: HelloServlet at java. Though it's just a mistake if you are sure, you can have your constructor but remember Servlet container calls that. I suggest you should use the init method to initialize the Servlet because that's the standard way. Deepak Kumar February 21, at PM. Is there ANY way in the world that I can call a servlet's "consructor"??

Preethi M. A default constructor can be generated for a servlet. S Chandra Mohan. I agree with prithi. I think u cant access the constructor odf a servlet as it is out of scope Anyway if come to know about this please post it under this session thanking all S Chandra Mohan. As to my knowledge we can explicitly instantiate a servlet. Frank Carver. A servlet is just a Java class which implements the javax. Servlet interface, so it may have one or more constructors, it may have methods with any names you like, and so on.

It doesn't implement service , doGet , or any of the other useful methods. I can run this class just as I would any other with a "main", the fact that it is a Servlet is of no consequence. It now can't even be loaded into a Servlet container, as it has no constructor with no arguments the first example had a default constructor. It also can be run from the command line, or called by another class. William Brogden. Why in the name of sanity would you want to pervert the normal servlet API?

Do you think the people who designed it are idiots? You are guaranteed that the init method will be called before any request is handled - that is where you should accomplish anything that has to be done before handling the first request. Hey William Brogden, I did not say that you are a idiot or fool..

I just want to clarify my doubt. Moreover you did not answer my question with proper reasoning. If I overidden the constructor with some functionalities like database connection ,what would happen to my servlet?

Will it get called or executed..?