Showing the DirectoryIndex in the URL with Apache

Is there a way to show the DirectoryIndex file in the URL as default? For example, if the DirectoryIndex is index.html, when I typed in www.someurl.com, it would automatically display www.someurl.com/index.html

From stackoverflow

• I don’t think that there’s an option to trigger Apache to do this automatically.

  But if you know the index document, you could use mod_rewrite to redirect such requests:

  RewriteEngine on
  RewriteRule ^/$ /index.html [L,R=301]