NetBeans6 need to F6 after every change to a class?

Hi, after pressing F6 to view a web app, if a change is made to a Java Class for example and F5 is pressed within a browser the change doesn't take effect. If F9 is pressed to compile the file the changes don't take effect. If i close the browser down then hit F6, as expected the changes take effect.

Is there a quicker way of viewing changes? or am I being impatient.