Home » Author Archives: Attila Mihaly Balazs (page 2)

Author Archives: Attila Mihaly Balazs

Java, the Steam controller and me

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Do you ever wondered if you could use existing stuff for something new? I saw some footage of the so-called ‘Steam controller’ (SC from now on) and looked at my game pad. Asking myself if it would be possible to use it in a steamy-like way, I’ve found some Java libraries and created a project that I’d like to share ...

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Big Data the ‘reactive’ way

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A metatrend going on in the IT industry is a shift from query-based, batch oriented systems to (soft) realtime updated systems. While this is associated with financial trading only, there are many other examples such as “Just-In-Time”-logistic systems, flight companies doing realtime pricing of passenger seats based on demand and load, C2C auction system like EBay, real time traffic control ...

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(Part 2 of 3): Synopsis of articles & videos on Performance tuning, JVM, GC in Java, Mechanical Sympathy, et al

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This is a continuation of the previous post titled (Part 1 of 3): Synopsis of articles & videos on Performance tuning, JVM, GC in Java, Mechanical Sympathy, et al. Without any further ado, lets get started with our next set of blogs and videos, chop…chop…! This time its Martin Thompson’s blog posts and talks. Martin’s first post on Java Garbage collection ...

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ArrayList vs LinkedList

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I must confess the title of this post is a little bit catchy. I have recently read this blog post and this is a good summary of  discussions & debates about this subject. But this time I would like to try a different approach to compare those 2 well known data structures: using Hardware Performance Counters. I will not perform ...

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WebSocket and Java

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WebSocket is a cool new(ish) technology that allows real-time, two-way communication between the browser and the server, with almost no overhead. What I want to do here, is to provide a very succint, but sufficient overview of how to start using the technology. So, a few things to start with: a tcp socket connection is opened between the browser and ...

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Applying ForkJoin – from optimal to fast

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JDK 7 is well into the hands of developers by now and most people have heard of ForkJoin, yet not so many have the time or chance in daily work to try it. It caused, and probably still causes a bit of confusion on how is it any different than a normal thread pool.[1] My goal in this article is ...

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Anatomy of a Java Decompiler

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A decompiler, simply put, attempts to reverse the transformation of source code to object code. But there are many interesting complexities—Java source code is structured; bytecode certainly isn’t. Moreover, the transformation isn’t one-to-one: two different Java programs may yield identical bytecode. We need to apply heuristics in order to get a reasonable approximation of the original source. (A Tiny) Bytecode ...

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Using Intel Performance Counters To Tune Garbage Collection

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Introduction I have to admit that I was shocked. Indeed, quite shaken when I realised this advent calendar post would be about garbage collection. The topic of GC has raised such passion amongst the advocates of Java and those who believe memory management should be manual. Many an article has been written regarding tiny subtle changes in strange looking command ...

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Run, JUnit! Run!!!

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JUnit together with JavaScript and SVN are some of the technologies that programmers often start using without even reading a single blog post let alone a book.  Maybe this is a good thing since they look simple enough and understandable so we can use them right away without any manuals, but this also means that they are also underused. In ...

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Mastering Java Bytecode

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Hey! Happy Advent :D I’m Simon Maple (@sjmaple), the Technical Evangelist for ZeroTurnaround. You know, the JRebel guys! We’ll as a result of writing a product like JRebel which interacts with bytecode, more often than you care to imagine, there are many things we’ve learned about it which we’d love to share. Let’s start at the start… Java was a ...

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