Yes, I saw this in AWT/Swing but there is already an implementation into a interface.
To provide default implementations, these implementations could be in separate classes. Such as, ComponentListenerAdapter or simply Adapter or maybe a AdapterFactory class and use the import static keyword. What do you think? From: Greg Brown [mailto:[email protected]] Sent: Miércoles, 21 de Abril de 2010 05:37 p.m. To: [email protected] Subject: Re: Constant Interface Antipattern No, the Adapter classes are used to provide default implementations of listener interfaces so a caller isn't required to implement every method. AWT has similar adapters. On Apr 21, 2010, at 5:32 PM, Alejandro Vilar wrote: Hi, just an observation but there are many places where this anti-pattern appears, for example ComponentListener.Adapter, anybody aware of that? Refs: http://en.wikipedia.org/wiki/Constant_interface http://java.sun.com/j2se/1.5.0/docs/guide/language/static-import.html Cheers, -Alejandro
