I see that it need not be. However, hard to say what to think, since Ch. 11 is not available. I will have to take a look at this book. Looks interesting.

At 10:16 AM 7/10/03 -0700, you wrote:
I am still downloading, but at first blush, it looks as if Johnson's context object is also a singleton?

At 04:45 PM 7/10/03 +0200, you wrote:
> This sounds a lot like the ServiceLocator pattern.
>
<http://java.sun.com/blueprints/corej2eepatterns/Patterns/ServiceLocator.html>

But ServiceLocator uses Singleton. Have a look the following link at page 126
http://developer.java.sun.com/developer/Books/j2ee/dpa/j2ee_dpa_Ch3.pdf

Here the author is talking about an object that doesn't need to be singleton.
That is the difference. At least as i understood it :)

José.


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