response.sendRedirect() --> Error

As I do response.sendRedirect(""); in my filter

Tomcat throw this kind of error message:
java.lang.IllegalStateException
org.apache.coyote.tomcat5.CoyoteResponseFacade.sendRedirect(CoyoteResponseFacade.java:399)
The solution is to add return; after response.sendRedirect();
just look like this:
response.sendRedirect();
return;