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How to customize Hibernate dirty checking mechanism

Introduction In my previous article I described the Hibernate automatic dirty checking mechanism. While you should always prefer it, there might be times when you want to add your own ...
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Distributed Crawling

Around 3 months ago, I have posted one article explaining our approach and consideration to build Cloud Application. From this article, I will gradually share our practical design to ...
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Implementing the ‘Git flow’

Git can be used in a variety of ways which is cool. But still, when working within a team, it is good to have a consensus on a common, shared approach in order to avoid conflicts. This ...
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Objects Should Be Immutable

In object-oriented programming, an object is immutable if its state can’t be modified after it is created. In Java, a good example of an immutable object is String. Once created, ...
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JUnit in a Nutshell: Test Runners

The fourth chapter of my multi-part tutorial about JUnit testing essentials explains the purpose of the tool’s exchangable test runners architecture and introduces some of the available ...
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How much do you pay per line of code?

Yes, I know, “line of code” (LoC) is a very wrong metric. There are tons of articles written about it, as well as famous books. However, I want to compare two projects in ...
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Java Concurrency Tutorial – Locking: Intrinsic locks

In previous posts we reviewed some of the main risks of sharing data between different threads (like atomicity and visibility) and how to design classes in order to be shared safely ...
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jUnit: Rules

Rules add special handling around tests, test cases or test suites. They can do additional validations common for all tests in the class, concurrently run multiple test instances, set ...
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EJB 3.x : Lifecycle and Concurrency models (part 2)

This is the second post of the two part series. The first part covered the life cycle and the concurrency behavior of Stateful and Stateless EJBs. I’ll cover Singleton EJBs in ...
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Why you should control Visibility of Class and Interface in Java

One of the important aspects of software development is maintenance, and  it’s proven by experience that a piece of software which keeps visibility of its components low is more ...
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