index.jsp default in Java EE project in Netbeans, where? -

I created a simple web application in Netbeans, a file named WebApplication1 has been created, which is index.jsp has been named. When I run the app, the browser goes to index.jsp . Nothing in the project is mentioned as the welcome page, so how is it happening? I checked the build.xml, glassfish-web.xml and all the XML, supporting files in the nbproject folder, but there is no mention of index.jsp . How is it taking?

By default NetBIn, if you do not create a project with any additional frameworks, no deployment No descriptor (web.xml) has been provided. To change this, right-click on the project and select New & gt; Other & gt; Web & gt; Standard Deployment Descriptor (web.xml)

Now edit and set up web.xml

    
 to replace newjsp.jsp by default  
  UPDATE   
 Clearly for Tomcat. ..  
 If any web. Is not available in the XML application, then default web. XML ($ CATALINA_HOME / conf / web.xml) tomcat application is supplied. The following descriptors of this deployment descriptor are:  
  & lt ;! - - & gt; & Lt ;! - If you have web of your own application XML - & gt; Let's define welcome files in & lt ;! - Deployment descriptor, list of that list * is configured - & gt; & Lt ;! - Here, so be sure to include any default value - & gt; & Lt ;! - To use within your application - & gt; & Lt; Welcome-file-list & gt; & Lt; Welcome-file & gt; Index.html & lt; / Welcome-file & gt; & Lt; Welcome-file & gt; Index.htm & lt; / Welcome-file & gt; & Lt; Welcome-file & gt; Index.jsp & lt; / Welcome-file & gt; & Lt; / Welcome-file-list & gt;   
 This is the reason that index.jsp is shown by default