Even changed context-root of war application using jboss-web.xml, JDBS open browser with previous context-root.

Issue

In JBDS(JBoss Developer Studio), when it runs an application, it opens browser showing welcome pages.
For example : (application folder is cat)

   http://localhost:8080/cat

After changing context-root of the application using jboss-web.xml, it still opens browser above url. How to change context-root on browser?