java.util
Interface Observer
java.lang.Object
|
+--java.util.Observer
public interface Observer
Interface that is implemented when a class wants to be informed of changes
in Observable objects.
Author:- Warren Levy <warrenl@cygnus.com>
See Also:
update
public void update(java.util.Observable observable, java.lang.Object arg)
This method is called whenever the observable object changes, and has
called notifyObservers
. The Observable object can pass
arbitrary information in the second parameter.
Parameters: