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Enterprise Java
Types of Entity Managers: Application-managed EntityManager
JPA specification defines few types of EntityManagers / Persistence Contexts. We can have: extended and transactional-scoped EntityManagers, container-managed or application-managed…
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Scala
Gang of Four Patterns With Type-Classes and Implicits in Scala (Part 2)
Type-classes are a powerful tool for library creators and maintainers. They reduce boilerplate, open libraries to extension, and act as…
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Enterprise Java
EJB Inheritance is Different From Java Inheritance
Despite the fact that EJB inheritance sometimes uses Java inheritance — they’re not always the same. Just as you could…
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DevOps
ARM Virtualization Extensions – Memory and Interrupts (Part 2)
In the first part of this series, I introduced the topic of virtualization. Today I will venture deeper into the…
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Clojure
Promises and futures in Clojure
Clojure, being designed for concurrency is a natural fit for our Back to the Future series. Moreover futures are supported…
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Enterprise Java
Defining EJB 3.1 Views (Local, Remote, No-Interface)
This post will talk about possible ways of defining EJB views using annotations (I’ll just mention about using EJB Deployment…
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Core Java
Weaknesses in Java Pseudo Random Number Generators (PRNGs)
This will be a sum up of a Paper written by Kai Michaelis, Jörg Schwenk and me, which was presented…
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Core Java
Extracting the elements of the Java Collection- The Java 8 way
We all have extensively used Collection classes like List, Map and their derived versions. And each time we used them…
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Enterprise Java
JUnit and EasyMock cooperation
Developers always need to take care about code which they produced. They should be ensured that code works properly after…
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