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JavaOne Cloud, DevOps, Containers, Microservices etc. Track

Every year, for the past 19 years, JavaOne is the biggest and most awesome gathering of Java enthusiasts from around the world. JavaOne 2015 is the 20th edition of this wonderful conference. How many conferences can claim this? :) Would you like to be part of JavaOne 2015? Sure, you can get notified when the registration opens and attend the conference. Why not take it a ...

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Android Google map: Add weather data

This post describes how to add weather layer to google map. We want to add weather information to a map so that we can have a look about clouds, temperature, pressure and so on. In the previous post we talked about how to get weather information and how to parse the data to create a UI, now we want to ...

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Microservices, Monoliths, and NoOps

Monolithic Applications A monolith application, in layman terms, is where entire functionality of the application is packaged together as a single unit or application. This unit could be JAR, WAR, EAR, or some other archive format, but its all integrated in a single unit. For example an online shopping website will typically consists of customer, product, catalog, checkout, and other features. Another example is of a movieplex. ...

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Java Web App Architecture In Takes Framework

I used to utilize Servlets, JSP, JAX-RS, Spring Framework, Play Framework, JSF with Facelets, and a bit of Spark Framework. All of these solutions, in my humble opinion, are very far from being object-oriented and elegant. They all are full of static methods, untestable data structures, and dirty hacks. So about a month ago, I decided to create my own ...

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JAXB Is Doing It Wrong; Try Xembly

JAXB is a 10-year-old Java technology that allows us to convert a Java object into an XML document (marshalling) and back (unmarshalling). This technology is based on setters and getters and, in my opinion, violates key principles of object-oriented programming by turning objects into passive data structures. I would recommend you use Xembly instead for marshalling Java objects into XML ...

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Dangerous Words

Ludwig Wittgenstein was one the greatest philosophers of 20th century. His book Tractatus Logico-Philosophicus addresses the limits of language and its relationship with reality. A friend of mine, great polemicist, suggested me to read it some years ago to understand one of his favourites conversational deux ex machina: “I can’t prove that, because of the inherent insufficiency of the language.” ...

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Dismantling invokedynamic

Many Java developers regarded the JDK’s version seven release as somewhat a disappointment. On the surface, merely a few language and library extensions made it into the release, namely Project Coin and NIO2. But under the covers, the seventh version of the platform shipped the single biggest extension to the JVM’s type system ever introduced after its initial release. Adding ...

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