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A little bit on the JVM and JIT

As you might be aware, the JVM (Java Virtusal Machine) is what makes it possible for Java to adhere to the write-once-run-anywhere paradigm. At its core, the JVM consists of the following ...
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MineCraft and off heap memory

Overview MineCraft is a really good example of when off heap memory can really help.The key requirements are:The bulk of the retained data is a simple data structure (in minecraft’s ...
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Java Build Tools: Ant vs Maven vs Gradle

In the beginning there was Make as the only build tool available. Later on it was improved with GNU Make. However, since then our needs increased and, as a result, build tools evolved. JVM ...
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Java SE 8 new features tour: The Big change, in Java Development world

I am proudly one of the adopt-OpenJDK members like others professional team members but joined from last 8 months, and we went through all stages of Java SE 8 development, compilations, ...
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Java 8 Friday: 10 Subtle Mistakes When Using the Streams API

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. Java 8 Friday Every ...
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Lambda Expressions and Stream API: basic examples

This blog post contains a list of basic Lambda expressions and Stream API examples I used in a live coding presentation I gave in June 2014 at Java User Group – Politechnica Gedanensis ...
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Making Unsafe safer

Overview If you use Unsafe directly, you risk crashing the JVM.  This happens when you access a page of memory which hasn’t been mapped and the result on Unix is a SIGSEG (if ...
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Test Data Builders and Object Mother: another look

Constructing objects in tests is usually a painstaking work and usually it produces a lot of repeatable and hard to read code. There are two common solutions for working with complex ...
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Docker Containers With Gradle in 4 Steps

 Do you need to create a Docker image from your Java web app? Are you using Gradle? If so, then you are only 4 steps away from Docker nivana. For this example, I’m going to use a ...
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Getting Started with Gradle: Introduction

Gradle is a build tool which replaces XML based build scripts with an internal DSL which is based on Groovy programming language. It has gained a lot of traction recently and that is ...
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