Search code examples
javajakarta-eeinit

Java Web Application on startup

Is there a way to execute java code, when a Java EE (Java web project) starts up (or receives a first request)? I know that servlets have init() methods, but is there such method for an entire application?

Solution

  • Have a class that 

    implements ServletContextListener

    and in your web.xml

    <listener>
    <listener-class> myPackage.MyServletContextListener </listener-class>
</listener>

    see http://docs.oracle.com/javaee/6/api/javax/servlet/ServletContextListener.html

    and override

    void contextInitialized(ServletContextEvent sce)