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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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OptaPlanner – Vehicle routing with real road distances

In the real world, vehicles in a Vehicle Routing Problem (VRP) have to follow the roads: they can’t travel in a straight line from customer to customer. Most VRP research papers and ...
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Agile outside of software

Later this week I’m doing a presentation at Agile On The Beach entitled: “Agile outside of software development”. (I resisted the temptation to call it “Agile Beyond Software”). ...
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Really Dynamic Declarative Components

In this short post I am going to focus on ADF dynamic declarative components. I mean a well known ADF tag af:declarativeComponent. It can be used as a pretty convenient way to design ...
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Use Cases for Elasticsearch: Geospatial Search

In the previous posts we have seen that Elasticsearch can be used to store documents in JSON format and distribute the data across multiple nodes as shards and replicas. Lucene, the ...
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2 Examples to Convert Byte[] array to String in Java

Converting a byte array to String seems easy but what is difficult is, doing it correctly. Many programmers make mistake of ignoring character encoding whenever bytes are converted ...
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Instant Big Data Stream Processing = Instant Storm

Every 6 months at Canonical, the company behind Ubuntu, I work on something technical to test our tools first hand and to show others new ideas. This time around I created an Instant ...
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Awesome SQL Trick: Constraints on Views

CHECK constraints are already pretty great when you want to sanitize your data. But there are some limitations to CHECK constraints, including the fact that they are applied to the ...
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NoSQL Job Trends – August 2014

Yes, it is already September, but I am only a day late for the NoSQL installment of the August job trends. In this update, I am splitting the graphs into two as I include more products. ...
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JAXB – A Newcomer’s Perspective, Part 2

In Part 1 of this series, I discussed the basics of loading data from an XML file into a database using JAXB and JPA. (If JSON is called for instead of XML, then the same idea should ...
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