servletcontextlistener - Get servlet init params in servlet context listener -

 <listener>     <listener-class>config</listener-class> </listener>    <servlet> <servlet-name>processreg</servlet-name> <servlet-class>processreg</servlet-class> <init-param>     <param-name>text</param-name>     <param-value>helloworld1</param-value> </init-param> 

public class config implements servletcontextlistener {    @override public void contextinitialized(servletcontextevent event) {     servletcontext servletcontext = event.getservletcontext();     string text1 = servletcontext.getinitparameter("text"); 

in method contextinitialized(servletcontextevent event) , if there 2 servlets , example , let's name of second servlet servlet2 , let's has has init - param called text value helloworld2 .

how listener know take processreg servlet ?

how param servlet2 ??

you need distinguish between servlet initialization parameters , context initialization parameters.

context initialization parameters are:

• context-wide;
• declared in <context-param> elements directly under <web-app> root;
• typically accessed using servletcontext.getinitparameter() method, e.g. inside listener's contextinitialized() method.

servlet initialization parameters are:

• servlet-specific;
• declared in <init-param> elements inside <servlet> element;
• typically accessed using servletconfig.getinitparameter() method, e.g. inside servlet's init() method.