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Java Garbage Collection Distilled

Serial, Parallel, Concurrent, CMS, G1, Young Gen, New Gen, Old Gen, Perm Gen, Eden, Tenured, Survivor Spaces, Safepoints, and the hundreds of JVM startup flags. Does this all baffle ...
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Java’s Reflection API

If you have ever asked yourself questions like these: – “How do I invoke a method, having only it’s name in a String?” – “How do I list all the attributes in a class ...
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Java 7 try-with-resources

Java 7 provides better resource management for resources that need to be closed when finished working with, for example files, streams, database connection and sockets. This language ...
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OpenHFT Java Lang project

OpenHFT/Java Lang started as an Apache 2.0 library to provide the low level functionality used by Java Chronicle without the need to persist to a file. This allows serializable and ...
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Java Just-In-Time compilation: more than just a buzzword

A recent Java production performance problem forced me to revisit and truly appreciate the Java VM Just-In-Time (JIT) compiler. Most Java developers and support individuals have heard ...
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Design Patterns: State

This article will be about State design pattern. It is one of behavioral design patterns. You don’t need to know many theory to understand the main concepts of the pattern. The post ...
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Mockito – RETURNS_DEEP_STUBS for JAXB

Sorry for not having written for some time but I was busy with writing the JBoss Drools Refcard for DZone and I am in the middle of writing a book about Mockito so I don’t have ...
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Garbage Collection in Java (4)

G1: Garbage First The G1 collector is the latest collector to be implemented in the hotspot JVM. Its been a supported collector ever since Java 7 Update 4. Its also been publicly stated ...
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Testing Java 8 in 3 Easy Steps

tl;dr Use your CI Setup to test Java 8. The upcoming Java 8 release promises a bunch of new feature for Java developers, but there’s always a risk when upgrading that your code ...
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The Dangers of Correlating Subtype Polymorphism with Generic Polymorphism

Java 5 has introduced generic polymorphism to the Java ecosystem. This has been a great addition to the Java language, even if we’re all aware of the numerous caveats due to generic ...
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