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Base64 in Java 8 – It’s Not Too Late To Join In The Fun

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Finally, Java 8 is out. Finally, there’s a standard way to do Base64 encoding. For too long we have been relying on Apache Commons Codec (which is great anyway). Memory-conscious coders will desperately use sun.misc.BASE64Encoder and sun.misc.BASE64Decoder just to avoid adding extra JAR files in their programs, provided they are super sure of using only Sun/Oracle JDK. These classes are ...

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Introduction to Nashorn

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Java 8 introduced and new javascript engine named “Nashorn”. Nashorn is based on Da Vinci Machine, a project with aim of adding dynamic language support to JVM. Nashorn is a nice milestone to make the hybrid softwares easier than before. The nice features of this engine makes you able to make a full duplex communication between your java (any other compiled ...

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db.person.find( { “role” : “DBA” } )

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Wow! it has been a while since I posted something on my blog post. I have been very busy, moving to MongoDB, learning, learning, learning…finally I can breath a little and answer some questions. Last week I have been helping my colleague Norberto to deliver a MongoDB Essentials Training in Paris. This was a very nice experience, and I am ...

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Getters and setters gone wrong

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Conventions are great when you can speed up your coding and automatically provide self-documenting and standard solutions and that’s probably one of the main reasons why the Convention over configuration pattern got so popular and extended. And that’s fine, unless you abuse or misuse them, as usual, breaking user (or reader) expectations and therefore increasing confusion and time consuming (that ...

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Notes to students doing research about Agile

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The dissertation/thesis writing season is approaching so I expect the recent set of questions from a student is the first of many. Actually they occur all year round but March to September is the busy period. So, to pre-empt any students bearing questions about Agile – and so I can just repeat my stock answers – here are some ideas ...

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Custom Git Commands in 3 Steps

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I’m lazy and so I seek ways to reduce repetitious activities. For instance, I’ve spent a lot of time in a terminal typing Git commands. A few of the more common commands, I’ve aliased. If I want to see a list of branches, I used to type:                 Listing Git branches $> git ...

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Careful With Native SQL in Hibernate

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I really like Hibernate, but I also don’t know a tool that would be nearly as powerful and deceptive at the same time. I could write a book on surprises in production and cargo cult programming related to Hibernate alone. It’s more of an issue with the users than with the tool, but let’s not get too ranty. So, here’s ...

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Error Tracking Reports – Part 3 – Strategy and Package Private

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This is the third blog in a series that’s loosely looking at tracking application errors. In this series I’m writing a lightweight, but industrial strength, application that periodically scans application log files, looking for errors and, if any are found, generates and publishes a report. If you’ve read the first blog in the series you may remember that I initially ...

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Java 8’s Functional Fomentation

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Java 8 has revolutionized Java. It’s easily the most significant release of Java in the last 10 years. There are a ton of new features including default methods, method and constructor references, and lambdas, just to name a few. One of the more interesting features is the new java.util.stream API, which as the Javadoc states, enables   functional-style operations on ...

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Automated bug finding with git bisect and mvn test

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Do you know the feeling when you discover a bug in a functionality that was working couple of weeks (or versions) ago? Too bad we didn’t have any automated tests and what used to be fine, now is broken. Let’s take this simple repository as an example:   Write test first We noticed that some particular functionality was OK in ...

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