HTTP status error

HTTP status error

I am using Eclipse Kepler wit Tom cat 7.0.12. I created a dynamic web
project consisting of a jsp named as index.jsp and it was working fine
before i renamed the index.jsp as oldindex.jsp and created one another
index.jsp. however since than I am in problem. each time i run my web
application within the eclipse using run at server i received following
error: HTTP status 404 /(name of folder of my created web project) type
status report description the requested resource (/my web project folder
name) is not available. I have created a new project from scratch even
than it returns same. than i delete the tom server and created new server
within the eclipse and created a new web dynamic project. however it did
n't work either. I can see the inside the eclipse the tomcat server is
running. any help as i have spent two days without any luck.