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Knowledge Representation and Reasoning with Graph Databases

A graph database and its ecosystem of technologies can yield elegant, efficient solutions to problems in knowledge representation and reasoning. To get a taste of this argument, we ...
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Builder pattern using Java 8

I work in an environment where a great deal of our day to day scripting tasks occur through calling remote services as opposed to working with the database. For a lot of scripting tasks ...
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JavaMail can be evil (and force you to restart your app server)

JavaMail always had an interesting approach when it comes to its configuration. Basically you have to fill an untyped map or Properties structure and hope for the correct interpretation. ...
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Creating files and directories in NIO.2

Great number of applications nowadays create files or directories for very wide range of purposes. Whether it is to generate a report, export piece of configuration or simply to store ...
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Working with files and directories in NIO.2

In previous articles I discussed creation (Creating files and directories) and selection (Listing and filtering directory contents) of files and directories. The last logical step to ...
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Listing a ZIP file contents with Stream API in Java 8

In Java 8 java.util.zip.ZipFile was equipped with a stream method that allows navigating over a ZIP file entries very easily. In this blog post I will show a bunch of examples showing ...
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Handle Every Event in Your Akka Application

Event here, event there, events flying everywhere. Post about checking that every Akka event will finally find its home. Akka and reactive, event-based applications are new approach ...
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Code4ReferenceList Recently Used(LRU) implementation using LinkedHashMap

Recently I stumbled on one of the Java interview questions: “Implement List-Recently-Used (LRU) Cache using Java collection class?” If you have worked on a similar problem before, ...
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Reactive Queue with Akka Reactive Streams

Reactive streams is a recently announced initiative to create a standard for asynchronous stream processing with built-in back-pressure, on the JVM. The working group is formed by companies ...
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Writing Clean Tests – Divide and Conquer

A good unit test should fail for only one reason. This means that a proper unit test tests only one logical concept. If we want to write clean tests, we have to identify those logical ...
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