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Java EE 8 MVC: A detailed look at Controllers


Java EE MVC is a new action based MVC framework planned for Java EE 8 and specified in JSR-371. This is the second post of my Java EE 8 MVC tutorial. The first post covered the basics and shows how to get started with Ozark, the Java EE 8 MVC reference implementation. In this post we will have a more ...

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Creating sample HTTPS server for fun and profit


Often during development or/and testing against real-life scenarios we, developers, are facing a need to run a full-fledged HTTPS server, possibly doing some mocking at the same time. On JVM platform, it used to be not trivial at all unless you know the right tool for the job. In this post we are going to create a skeleton of fully ...

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5 Weird Java Questions That Will Make Your Head Spin


Some of the weirdest Java puzzlers that we had a chance to get our hands on Even the most experienced Java developers will find the questions in this post confusing. Or at the very least, amusing (And absolutely unfair). After our adventure with the Java Deathmatch we’ve decided to publish a different set of questions this time around, highlighting some ...

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Critical HL7 Usecases With Camel, ActiveMQ, Elasticsearch


HL7 over MLLP is a very common transport mechanisms for systems that can speak the HL7 protocol format. JBoss Fuse is a very powerful microservices-style integration platform and has a proven track record for building flexible, resilient, highly available integration scenarios for critical health-care providers. Additionally, replacing legacy vendors like SeaBeyond on JCAPS is the sweet spot for these types ...

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Listen to notifications from Postgresql with Scala


In the past I’ve written a couple of articles (Building a REST service in Scala with Akka HTTP, Akka Streams and reactive mongo and ReactiveMongo with Akka, Scala and websockets) which used MongoDB to push updates directly from the database to a Scala application. This is a very nice feature if you just want to subscribe your application to a ...

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Scaling Agile: Questions to Ask Before Choosing Your Agile Framework


In the fourteen years after the publication of the Agile Manifesto, many organizations have realized significant gains in productivity, quality, and even job satisfaction at the team level. According to the results of Version One’s State of Agile Survey, 94 percent of the respondents are using Agile practices in some manner. The survey also calls out the increasing interest in ...

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Downsides of Mixed Identifiers When Porting Between Oracle and PostgreSQL Databases


Both the Oracle database and the PostgreSQL database use the presence or absence of double quotes to indicate case sensitive or case insensitive identifiers. Each of these databases allows identifiers to be named without quotes (generally case insensitive) or with double quotes (case sensitive). This blog post discusses some of the potential negative consequences of mixing quoted (or delimited) identifiers ...

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What the Heck Is Mutation Testing?


In recent times, I came repeatedly upon the term mutation testing. Since the word is that this approach is able to detect test safety net gaps in a way which goes beyond code coverage, I took my time to catch up on the topic and gave it a try. This post summarizes my findings as a quick introduction to the ...

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