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Editorial Team
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Asked: 2026-06-11T23:24:11+00:00

In one of the code i saw that, there was no <servlet-mapping> tags and

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In one of the code i saw that, there was no <servlet-mapping> tags and only its declared as below

<servlet>
    <servlet-name>startServlet</servlet-name>
    <servlet-class>com.login.StartupServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

can this work without <servlet-mapping> and work on <load-on-startup>1</load-on-startup>??

This servlet will get loaded on server startup to connect to DB and do few operation on caching.

PS: this is on Servlet 2.0+ version and not annotated.

thanks
Punith

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1 Answer

  1. Editorial Team

    The code you posted defines something you might call an “initializer Servlet”. It is not directly accessed from the outside world (using an URL) but it will be started by the Servlet container.

    It is valid but it can’t be accessed by the clients. It’s often used for initialization purposes. You can access servlets without <servlet-mapping> using Servlets 3.0 annotations.

    Mind that <load-on-startup> doesn’t hold true/false value (0/1) but it defines an integer which is an order of startup. Higher number means that the Servlet will be loaded after the ones with lower number.

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