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Double your money again

Overview A long time ago I wrote an article on using double for money. However, it is still a common fear for many developers when the solution is fairly simple. The problem with using ...
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EJB 3.1 Global JNDI Access

As outlined in the previous parts of this series, the major drawback of the EJB v. 3.0 Specification was the lack of portable global JNDI names. This implies that there’s no portable ...
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References to EJBs Outside Your Application With Oracle WebLogic

In the previous posts we made an overview of the EJB v. 3.0 and of the portable mechanisms it provides you to build your Java EE application. Since Java EE specifications are all about ...
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EJB Programmatic Lookup

In our previous post we learnt about EJB references and EJB injection. Even though EJB injection is a powerful container facility that eases modular application development, sometimes ...
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The Perfect Singleton

From time to time I met Java programmers that are not really sure how they should implement Singleton pattern properly. (if you don’t have an idea what Singleton is just try Wikipedia: ...
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Basic EJB References, Injection and Lookup

In the first part of this series we’ve introduced the mechanisms provided by the Enterprise JavaBeans v. 3.0 Specification to define EJB components, declare a reference to an ...
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An Introduction to EJB 3.0 Injection and Lookup

Introduction The Enterprise JavaBeans Specification v. 3.0 introduces a simplified, annotation based API for EJB injection and lookup. EJB 3.0 are now POJOs and can be injected in other ...
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Hibernate Gotchas to Watch out

I’ve been using Hibernate for some time now and when I don’t work on a hibernate project for a while I find myself doing the same mistakes I did the previous times. So ...
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C++ or Java, which is faster for high frequency trading?

Overview There are conflicting views as to what is the best solution for high frequency trading. Part of the problem is that what is high frequency trading varies more than you might ...
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Java and Memory Leaks

Overview The term “memory leak” is used in Java in a manner which is different to how it is used in other languages. What does a “memory leak” mean in general ...
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