What are the most common designpaterns?

Hello!
I have been working with a designpatern before. But i have only used one of them.
I have heard that there are many diffrent kind of paterns.
Which are the most common? Is EJB a kind of designpatern?
And does anybody know any good internetpage about designpaterns?
Thank you.

Hello!
I have been working with a designpatern before. But i have only used one of them.If you've written Java, you've used a lot of patterns without knowing it. They're built into the language.
I have heard that there are many diffrent kind of paterns.The first "design patterns" book, and arguably the best, is "Design Patterns" by Gamma, Johnson, Helm, and Vlissides. I'd read that if you haven't.
Which are the most common? Is EJB a kind of designpatern?EJB itself isn't a "pattern", but it uses them. Since EJBs are based on RMI, it's using Proxy every time you call an EJB. The stub is a proxy for the remote object that lets your client speak to it as if it was in the same address space.
And does anybody know any good internetpage about designpaterns?Core J2EE Patterns IS excellent. Doug Schmidt has done a lot of patterns work, too.

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Filter on send port not on the same line as the Filter tag.
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http://winterdom.com/2008/06/biztalkfiltersnotgettingimported
Jean-Paul Smit | Didago IT Consultancy
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Twitter | LinkedIn
MCTS BizTalk 2006/2010 + Certified SOA Architect
Please indicate "Mark as Answer" if this post has answered the question.

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d1acf245-8019-40c9-a1df-fdc9374b36b2 wrote:
Can any one tell me what are the most challenging conversions in oracle apps.
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https://forums.oracle.com/message/10705767
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(Link removed by Moderator)

Hi Christie!
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