If by "editing the tomcat default page" you mean setting the JSP page (or Servlet) that will be displayed be default if a user doesn't enter the page name but just the folder forward slash like http://www.stardeveloper.com/ instead of http://www.stardeveloper.com/yourwelcomefile.jsp. Then add these tags to your web application's web.xml file:
<welcome-file-list>
<welcome-file>yourwelcomefile.jsp</welcome-file>
</welcome-file-list>
Then everytime a user requests http://www.stardeveloper.com/, Tomcat will delegate the request to your proper welcome file, http://www.stardeveloper.com/yourwelcomefile.jsp.