Mediator and Strategy

[Aruna Raghavan]

Hi,
Don't both of these pattern provide loose coupling between two classes and hence similar in nature?
Aruna

[steve souza]

The Abstract Factory is an example of the Strategy pattern. It is just a special case that creates other Objects, but don't let that fool you it is the Strategy Design Pattern.
Another example of the Strategy pattern would be the following:

// look at the other thread and notice the similarities between Zip and GUIFactory interfaces.
public interface Zip {
  public void zip();
  public void unzip();
}

public class FancyFastZip implements Zip{
  public void zip() {...}
  public void unzip() {...}
}
public class PlainSlowZip implements Zip{
  public void zip() {//different implementation}
  public void unzip() {//different implementation}
}

steve - http://www.jamonapi.com

[Ilja Preuss]

Originally posted by Aruna Raghavan:
Hi,
Don't both of these pattern provide loose coupling between two classes and hence similar in nature?
Aruna

Yes - as most of the other design patterns, too. They differ in details and motivation, though.