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Synthetic and bridge methods

If you have ever played with reflection and executed getDeclaredMethods() you may have been surprised. You may get methods that are not present in the source code. Or, perhaps, you ...
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Common gotchas in Java

Overview Java is a minimalist language with deliberately less features than other languages, never the less it has edge cases which strange effects, and even some common cases with ...
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Functional Programming with Java 8 Lambda Expressions – Monads

What is a monad?: A monad is a design pattern concept used in mostly functional programming languages like lisp or in the modern world clojure or scala. (I would in fact copy a few ...
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Detecting (write) failures when using memory mapped files in Java

Memory mapped files are a good and often overlooked tool. I won’t go into the details here on how they work (use the force Google Luke!), but I will  quickly summarize their advantages:lazy ...
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A deeper look into the Java 8 Date and Time API

Within this post we will have a deeper look into the new Date/Time API we get with Java 8 ( JSR 310). Please note that this post is mainly driven by code examples that show the new ...
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Externalizable in java

Before understanding Externalizable interface, you need to have idea about Serialization.You can read more about Serialization at Serialization in java. Java provides mechanism called ...
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Design Pattern: Immutable Embedded Builder

Last week I wrote about what makes a pattern anti-pattern. This week I present a design pattern… or wait… perhaps this is an anti-pattern. Or is it? Let’ see! The builder pattern ...
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Java 8: Sorting values in collections

Having realised that Java 8 is due for its GA release within the next few weeks I thought it was about time I had a look at it and over the last week have been reading Venkat Subramaniam’s ...
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Getting started with Mocking in Java using Mockito

We all write unit tests but the challenge we face at times is that the unit under test might be dependent on other components. And configuring other components for unit testing is definitely ...
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Java 8 Friday Goodies: Local Transaction Scope

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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