Scott H. Kao

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since Nov 07, 2004
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Recent posts by Scott H. Kao

Hello,
How do you architect the asynchronous communication between clients and J2EE Servers? The J2EE servers should be clustered and load-balanced. The purpose is to let the clients constantly receive messages from the J2EE server asynchronously without any polling behaviors. The only means I can come up with are JMS temporary queues which are created by clients and let the server side send messages to those temporary queues to achieve asynchronous communication. But there's a problem with this: the queues are not load-balanced (at most only highly available) in JBoss. Do you have any suggestions or idea on this?

Thanks,
Scott
It seems that an architect aims at building a robust architecture and focuses on busines domain as well. The overlapped area with respect to the class diagram is sometimes confusing. Do you think the boundary between an architect and a designer is that an architect draws only the relations between all the classes and leaves all attributes and methods out to designers? Would you think such kind of class diagram kind of week?

Any views are much appreciated!
Laxmi,
Thanks for your reply!
I'm thinking of leaving them out too because we've got to leave some work for the DESIGNER(S) instead of architects doing it all.
Can we draw the classes without showing any methods in them and pass the exam?
Could you email me the ppt ?

my email: scott@mail.shiningvision.com

Thanks in advance!
The only mock exam I had took before sitting the Part I wasn also from the yahoo web site, named something like "Practice Questions." It includes about 288 questions and is said to be extracted from the Whizlab simulator. But I'm not sure of that. But what I can be sure of is that the real Part I exam is easier than the mock exam. So, don't get frustrated just by the mock exams and be sure to have faith in yourself.
I cleared SCEA Part I with 87% today.
When the test was in progress, I was nervous about whether I was going to fail. Probably for lack of experience in the field, it took me quite a while to think over the scenario questions. This is quite different from the other certificates I've got. But I have been so excited and happy with the score!
What follows is my Section Analysis:
-------------------------------------
Concepts---------------83%
Common Architectures---66%
Legacy Connectivity----60%
EJB--------------------100%
EJB Container Model----100%
Protocol---------------100%
Applicability of J2EE--100%
Design Patterns--------100%
Messaging--------------100%
Internationalization---100%
Security---------------50%
-------------------------------------
After the exam, I have to say I HATE the Paul Allen book, which brought my to sleep several times and frustrate me a lot. I would feel better even with the free common notes from the yahoo web site.
Hi all,
I'm about to prepare for the SCEA.
And I'll turn 28 next month.
I'm also happy to be part of the members, taking part in the "Architect Domain."

Regards,
Scott
I passed the exam with 98% today.
I want to say thanks to everybody participating in the forum.
SCEA, I think, will be the next goal I'm going to acheive.
15 years ago
Hi there,

It took me 3 months to hit the HF EJB book, during which I also tried some application servers including "Sun's Application Server" and "JBoss."
I read the book 4 times with the EJB spec only for reference.
I think the book, together with EJB Plus simulator, is enough for the exam.
The IDE I used to test the application servers was JBuilder 2005.

Best Regards,
Scott H. Kao
15 years ago
I had had no experience with EJB, but I passed SCBCD with 97%, which is much higher than I expected!

I'm very grateful to Head First EJB and EJB+, which accompanied my for the last few days.

BTW, the scores I got with EJB+ were around 80%~90% only.
15 years ago
Hi All,
Thanks for your provided info!
I've got a better understanding of it now.

Regards,
--Scott
Hi all,
Why is this ejbCreate method considered illegal in the CMP entity bean?

public int ejbCreate() throws javax.ejb.CreateException
{
...
}

extracted from Q.5 of HFEJB Pg. 363.

Thanks in advance!

Regards,
--Scott
Congratulations!


Best Regards,
Scott
15 years ago
Congratulations!


Best Regards,
--Scott
15 years ago