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Tag Archives: W4G

GC Memory Visualizer Tutorial – Part1

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As you may have read from past articles, one of the key Java programmer skills to acquire is your ability to understand and assess the health of the JVM such as the Java heap memory footprint along with the garbage collection process. In order to achieve the above goals, all JVM vendors (Oracle, IBM…) provide, via the verbose:gc parameter, a ...

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Computer Science Education in High Demand

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The growing need for qualified computer programmers and the availability of free, online education programs is what inspired today’s post by Olivia Leonardi. She is looking to add to a discussion on Java Code Geeks that laid out 27 things every programmer needs to know by discussing ways people can become a web professional, something necessary before they hold those ...

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Using Groovy scriptlets inside a *.docx document

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Introduction One of my recent projects required automated generation of contracts for customers. Contract is a legal document of about 10 pages length. One contract form can be applied for many customers so the document is a template with customer info put in certain places. In this article I am going to show you how I solved this problem. Requirements ...

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Building Rich Clients with JacpFX and JavaFX2

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Creating fast and scaling desktop clients is always a challenge, particularly when dealing with a large amount of data and long running tasks. Although Eclipse RCP and Netbeans RCP are established platforms, the idea was to build a lightweight framework that handles components asynchronously, similar to web components. Developers should have less effort on threading topics and should be able ...

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Big Data analytics with Hive and iReport

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Each J.J. Abrams’ TV series Person of Interest episode starts with the following narration from Mr. Finch one of the leading characters: “You are being watched. The government has a secret system–a machine that spies on you every hour of every day. I know because…I built it.” Of course us technical people know better. It would take a huge team ...

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From Spring to Java EE 6

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I recently worked on a quite complex project mixing many Java EE 6 technologies (such as JPA, JAXB, JMS, JTA, JAX-RS, etc…). For productivity and planning reasons, the prototyped application was designed as a standalone pure Spring application. When the development of the real application started, we re-challenged our initial choice (i.e. Spring v3) and analyzed the interest of switching ...

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Spring & Quartz Integration with Custom Annotation, the SPANN way

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In a previous post, we demonstrated how to create and configure Quartz jobs with annotations in a Spring container. We used a class-level annotation to add some metadata to a bean which implements Quartz’s Job; the annotation defines the job’s name, group, and its cron-expression. Later, a big portion of the code is dedicated to handling that annotation: find the ...

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GPGPU with Jcuda the Good, the Bad and … the Ugly

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In our previous article GPGPU for Java Programming we showed how to setup an environment to execute CUDA from within java code. However the previous article focused only on setting up the environment leaving the subject of parallelism untouched. In this article we will see how we can utilize a GPU do what is doing best: parallel processing. Through this ...

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GPGPU Java Programming

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In one of our previous posts we discussed the General Processing on the Graphics Processing Unit (GPGPU) concepts and architecture. For C/C++ programmers this is all great but for Java Programmers writing C/C++ instead of Java is to say the least an inconvenience. So what tools are out there for Java programmers? Before we dive into coding some background. There are ...

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