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Three-State Booleans in Java

Every now and then, I miss SQL’s three-valued BOOLEAN semantics in Java. In SQL, we have:TRUE FALSE UNKNOWN (also known as NULL)Every now and then, I find myself in a situation ...
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Agile tools do NOT make you Agile

 Ask yourself the following questions:Do great golf clubs make you a great golfer? Does a formula one race make you an expert driver? Do great development tools make you an expert ...
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Common Java Myths

These are questions which are likely to be too advanced to ask in any interview as they may just put candidates off.  Never the less, they may be work practising in your own time.                 Myth ...
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Simple Binary Encoding

Financial systems communicate by sending and receiving vast numbers of messages in many different formats. When people use terms like “vast” I normally think, “really..how ...
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The effects of programming with Java 8 Streams on algorithm performance

Multi-paradigm programming with Java has been possible for many years, with its support for a mix of service oriented, object oriented and aspect oriented programming. Java 8 with its ...
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Groovy Closures: this, owner, delegate let’s make a DSL

Groovy closures are super cool. To fully understand them, I think it’s really important to understand the meaning of this, owner and delegate. In general:this: refers to the ...
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Java 8 Friday: Let’s Deprecate Those Legacy Libs

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. Java 8 Friday Every ...
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Java EE7 and Maven project for newbies – part 2 – defining a simple war for our application

Resuming from the first part Part #1 We have just defined, our parent pom. A special type of pom that eventually defines the libraries that our application is going to use. It also ...
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Broken company acronyms

Acronyms are there as easy to remind references for extended topics and obviously to somehow summarize them, and that’s great especially when you can use them as new words to quickly ...
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Java 8 : Functional Interface Example

To Support lambda expressions in Java 8, they introduced Functional Interfaces. An interface which has Single Abstract Method can be called as Functional Interface. Runnable, Comparator,Cloneable ...
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