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• Russian Hydrodynamic Modeling, Prediction, and Visualization in Java

  - by Geertjan

  JSC "SamaraNIPIoil", located in Samara, Russia, provides the following applications for internal use. SimTools. Used to create & manage reservoir history schedule files for hydrodynamic models. The main features are that it lets you create/manage schedule files for models and create/manage well trajectory files to use with schedule files. DpSolver. Used to estimate permeability cubes using pore cube and results of well testing. Additionally, the user visualizes maps of vapor deposition polymerization or permeability, which can be visualized layer by layer. The base opportunities of the application are that it enables calculation of reservoir vertical heterogeneity and vertical sweep efficiency; automatic history matching of sweep efficiency; and calculations using Quantile-Quantile transformation and vizualization of permeability cube and other reservoir data. Clearly, the two applications above are NetBeans Platform applications.

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• How can I become a technical trainer from a software developer?

  - by Abhilasha

  I am a software developer; in fact a mobile application developer with 4 years of experience. I am passionate about training. I have never been an official trainer but, I have trained freshers on mobile technologies. Now how do I become a professional technical trainer. I have following questions: Do I need some kind of professional certification or degree? Is it too early for me to start as a trainer? I mean experience wise. I will not ask if it's worth it because I am very keen on pursuing training as a profession. However, if I have to be up to date with technology, I don't think I can give up coding and pursue training full time. Any pointers or guidelines would be helpful.

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• Tutoriel Java : Simulacres de tests avec EasyMock et JUnit 4, par Baptiste Wicht

  Cet article va vous présenter l'utilisation de Easymock et de JUnit 4 pour effectuer des tests unitaires avec des simulacres de tests.

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• Java @Contented annotation to help reduce false sharing

  - by Dave

  See this posting by Aleksey Shipilev for details -- @Contended is something we've wanted for a long time. The JVM provides automatic layout and placement of fields. Usually it'll (a) sort fields by descending size to improve footprint, and (b) pack reference fields so the garbage collector can process a contiguous run of reference fields when tracing. @Contended gives the program a way to provide more explicit guidance with respect to concurrency and false sharing. Using this facility we can sequester hot frequently written shared fields away from other mostly read-only or cold fields. The simple rule is that read-sharing is cheap, and write-sharing is very expensive. We can also pack fields together that tend to be written together by the same thread at about the same time. More generally, we're trying to influence relative field placement to minimize coherency misses. Fields that are accessed closely together in time should be placed proximally in space to promote cache locality. That is, temporal locality should condition spatial locality. Fields accessed together in time should be nearby in space. That having been said, we have to be careful to avoid false sharing and excessive invalidation from coherence traffic. As such, we try to cluster or otherwise sequester fields that tend to written at approximately the same time by the same thread onto the same cache line. Note that there's a tension at play: if we try too hard to minimize single-threaded capacity misses then we can end up with excessive coherency misses running in a parallel environment. Theres no single optimal layout for both single-thread and multithreaded environments. And the ideal layout problem itself is NP-hard. Ideally, a JVM would employ hardware monitoring facilities to detect sharing behavior and change the layout on the fly. That's a bit difficult as we don't yet have the right plumbing to provide efficient and expedient information to the JVM. Hint: we need to disintermediate the OS and hypervisor. Another challenge is that raw field offsets are used in the unsafe facility, so we'd need to address that issue, possibly with an extra level of indirection. Finally, I'd like to be able to pack final fields together as well, as those are known to be read-only.

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• Les pionniers de la robotique humanoïde Aldebaran proposent un Developer Program, pour aider les développeurs à donner vie à Nao

  Les pionniers de la robotique humanoïde Aldebaran proposent un Developer Program, pour aider les développeurs à donner vie à Nao Aldebaran Robotics est la première entreprise française de robotique humanoïde. Elle a vu le jour en 2005 sous l'impulsion de son fondateur, Bruno Maisonnier. Aujourd'hui, elle lance son Developer Program, qui s'adresse aux programmeurs désireux de faire avancer le projet Nao. Nao est un petit robot haut de 58 centimètres et pesant 5 kg. Il est robuste et peut chuter sans se briser, il est de plus capable de se relever. En maîtrisant sa programmation, on peut le faire marcher, danser, couper du bois, communiquer avec des enfants autistes, etc. Les applications sont quasiment infinies, mais nécessitent d...

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• Unzipping in Java and FileUtil.copy

  - by Geertjan

  Via NetBeans File Systems API, which provides FileUtil.copy below, which means a dependency on NetBeans Utilities API: private void unzipEpubFile(String folder, File file) throws IOException { final AtomicBoolean canceled = new AtomicBoolean(); //define and start progress bar here... // ProgressHandle handle = // ProgressHandleFactory.createHandle( // Bundle.MSG_unpacking(zip.getName()), // new Cancellable() { // @Override // public boolean cancel() { // return canceled.compareAndSet(false, true); // } // }); //then unzip 'file' into 'root": try { List folders = new ArrayList<>(); try (InputStream is = new FileInputStream(file)) { ZipInputStream zis = new ZipInputStream(is); ZipEntry entry; while ((entry = zis.getNextEntry()) != null) { if (canceled.get()) { return; } String n = entry.getName(); File f = new File(folder, n); if (n.endsWith("/")) { if (!f.isDirectory()) { if (!f.mkdirs()) { throw new IOException("could not make " + f); } if (entry.getTime() > 0) { if (!f.setLastModified(entry.getTime())) { // oh well } } } folders.add(f); } else { //handle.progress(Bundle.MSG_creating(n)); File p = f.getParentFile(); if (!p.isDirectory() && !p.mkdirs()) { throw new IOException("could not make " + p); } try (OutputStream os = new FileOutputStream(f)) { FileUtil.copy(zis, os); } if (entry.getTime() > 0) { if (!f.setLastModified(entry.getTime())) { // oh well } } } } } //handle.switchToDeterminate(folders.size()); if (canceled.get()) { } } finally { //stop progress bar } } Mostly from NetBeans IDE sources for working with projects and ZIP files.

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• JavaOne Technology Conference Is Coming to Russia

  - by Tori Wieldt

  JavaOne Russia 17-18 AprilRussian Academy of Sciences, MoscowRegister Now JavaOne and Oracle Develop 2012 Russia offers a wide variety of sessions, hands-on labs, keynotes, demos, and the opportunity to network with developer peers. If you’re looking for in-depth sessions on Java technologies and tools, this is the conference for you. Your registration also gets you into Oracle Develop sessions as well, so you can learn about application servers, cloud development and, of course, database development. The JavaOne Russia tracks are:Client-Side Technologies and Rich User ExperiencesLearn about developments in Java for the desktop and practices for building rich, immersive, and powerful user experiences across multiple hardware platforms and form factors. Core Java PlatformDiscover the latest innovations in Java virtual machines. Get deep technical explanations in security and networking and enhancements that allow dynamic programming languages to drive Java platform adoption. Java EE Web Profile, Platform Technologies, Web Services, and the Cloud Update your knowledge on topics such as Web application development, persistence, security, and transactions. This track will also address modularity, enterprise caching, Web sockets, and internet identity. Mobile, Java Card, Embedded, and DevicesThis track is devoted to Java technology as the ultimate platform for mobile computing. It also covers embedded and device usages of Java technologies, including Java SE, Java ME, Java Card, and JavaFX. Share this event: #oracleRU

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• Développement d'un système de chat client/serveur en Java : cahier des charges, protocole et impléme

  Nous allons ici voir un article sur le développement de chaque étape d'un système de tchat client/serveur, c'est-à-dire cahier des charges, protocole, étude, conception et enfin développement. Nous baptiserons le protocole de cette application PCU (Protocole de Chat Universitaire). Nous allons d'abord faire un programme de base et ensuite lui apporter des améliorations petit à petit.

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• Roll standalone JBoss app under Tomcat

  - by Seva Alekseyev

  I've got a Linux box where there’s Tomcat running, with some JSP applications in it. Now, I’ve received a third party app from a developer shop to be eventually deployed. It came as an archive called "jboss7.tar" which, it seems, contained a whole standalone Web server. Once I’ve followed their instructions and run the designated shell script, it would start a server that would listen on port 8081, and app pages are being served up. Still, this strikes me as an inelegant setup. Why run two Web servers side by side, both of them Java-enabled? Also, the manual startup of the standalone app, I don't like that either. The real question is – can I take the user-provided portions from the said archive and somehow plug it under the existing Tomcat instance? It looks like the user code is packaged into files with .war extension, I can see them under /var/jboss7/standalone/deployments.

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• Who should get a developer certificate from Apple if client want their company name to show up in App Store

  - by doNotCheckMyBlog

  I am about start my first project with client, However I will work as a consultant. So do I need to get developer certificate and post my client's app in app store? Or I should ask my client to get the license and then I help them deploying the app on their name? They don't want company name to be my organisation but they want their company name to show up in App Store. However the developer of app is my organisation not them. How to deal with this situation?

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• Procès Java - Android : Oracle fait appel du premier jugement en faveur de Google

  Android : fin du procès entre Oracle et Google Débouté de presque tout Oracle peut encore faire appel Mise à jour du 18/07/12 Le procès entre Oracle et Google est terminé. En tout cas le premier procès. Après avoir été débouté de quasiment toutes ses demandes, Oracle avait demandé au juge un nouveau procès pour revoir les faits et les premières décisions. Dans un document publié en fin de semaine dernière le juge refuse cette possibilité au motif qu'Oracle n'apporte aucun argument nouveau dans sa demande. Oracle accusait Google d'avoir enfreint plusieurs de ses brevets en utilisant certaines API dans Android. La société de Larry El...

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• Can IE Developer Tools be configured to 'see' a window that is less than full screen in size?

  - by user2795930

  I have used Developer Tools for IE for over 2 years, so I have some good experience with the tool. But the window that I need to debug now is less than a full screen in size and cannot be made larger. (Just imagine a large window that is approximately 2/3's of your full screen, but cannot be enlarged so that it is full screen). So when I try to utilize Developer Tools to debug the window, it doesn't work. It is as if Developer Tools tries to look at the full screen which is displayed behind my window that is displayed on the screen. Is there any way to make Developer Tools 'see' a window that is less than full screen in size and sits on top of another screen / web page?

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• Implementing cache system in Java Web Application

  - by TGM

  I worked with JPA (Eclipselink implementation) and Hibernate. As I understand these two have great caching systems. I am interested in caching in a Web application and in order to better understand the process I'm trying to implement something on my own. Sadly, I cannot find any in depth documentation about this subject. I'm interested in things like high scalability, sharing memory on different machines and other important theoretical matters. Is there any tutorial or open project I could check out? Thank you! *LE: * I want to cache DB information in POJOs just like JPA or Eclipselink

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• PDF to Image Conversion in Java

  - by Geertjan

  In the past, I created a NetBeans plugin for loading images as slides into NetBeans IDE. That means you had to manually create an image from each slide first. So, this time, I took it a step further. You can choose a PDF file, which is then automatically converted to an image for each page, each of which is presented as a node that can be clicked to open the slide in the main window. As you can see, the remaining problem is font rendering. Currently I'm using PDFBox. Any alternatives that render font better? This is the createKeys method of the child factory, ideally it would be replaced by code from some other library that handles font rendering better: @Override protected boolean createKeys(List<ImageObject> list) { mylist = new ArrayList<ImageObject>(); try { if (file != null) { ProgressHandle handle = ProgressHandleFactory.createHandle( "Creating images from " + file.getPath()); handle.start(); PDDocument document = PDDocument.load(file); List<PDPage> pages = document.getDocumentCatalog().getAllPages(); for (int i = 0; i < pages.size(); i++) { PDPage pDPage = pages.get(i); mylist.add(new ImageObject(pDPage.convertToImage(), i)); } handle.finish(); } list.addAll(mylist); } catch (IOException ex) { Exceptions.printStackTrace(ex); } return true; } The import statements from PDFBox are as follows: import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage;

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• Lancement du forum d'entraide dédié à Groovy, l'un des langages alternatifs pour la plateforme Java

  Bonjour, Ce nouveau forum d'entraide est destiné aux questions sur Groovy. Avant de poser votre question, prenez le temps de consulter les ressources à votre disposition :Documentation officielle La liste des modules Groovy (Gaelyk, GORM, Graddle, Grails, etc.) Introduction au langage de script Groovy par Eric Reboisson La catégorie Groovy du blog de Lunatix Voir également :

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• Sortie officielle de ASP.NET MVC 2 pour Visual Studio 2008, Visual Web Developer 2008 Express et Net

  Mise à jour du 15/03/10 Sortie officielle de ASP.NET MVC 2 Pour Visual Studio 2008, Visual Web Developer 2008 Express et Net Framework 3.5 Le mois dernier, Microsoft avait mis en ligne une Release Candidate de sa nouvelle version de ASP.NET MVC spécialement conçue pour les développeurs d'applications webs. Depuis la fin de la semaine dernière, la technologie est passé en version définitive. Elle peut être utilisée avec Visual Studio 2008 (ou Visual Web Developer 2008 Express) et Net Framework 3.5. Pour mémoire, elle est rétro-compatible avec ASP.NET MVC 1 et/ou peut-être installée side-by-side avec ce dernier. AS...

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• Need a developer certification… any helps?

  - by Paska

  Hi all, for my company i need to take a new certification. I'm a mobile developer, in particular iphone/ipad, but windows phone mobile (7) or android are good anyway! I don't wont only mobile... it's good enough php, c#, java, c++, anything about dev! I already have SUN Java Programmer (this). Mobile architect exist? Something like this? What are the (best/sought) existing developer certifications around the world, that i can study-take? thanks a lot!! A

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• C++ developer looks for book(s) about Android apps & widgets (& services etc.) [on hold]

  - by Valmond

  I'm senior C++ developer, I have also programmed professionally j2me some years. I'd like to make some apps and widgets for Android and I'd like to read up a bit on this new java stuff Android is using. I have (of course) checked out some tutorials and so but it seems I miss the basics, I can compile some stuff (read: examples) in eclipse but I just don't know how to, for example, add a service or what an 'intent' is, why my widget isn't called but successfully launches the main app when clicked and so on. So, what is a really good book for someone that is a developer but mostly need the hard facts about developing something specific like Android apps & widgets? Thanks a bunch!

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• How can I justify a technology over another? (Java over .NET)

  - by user674887

  We are working in a Java/.NET company and my team and I are planning a project for a client. One of the requirements is that the project has to be done in .NET I've asked about this requirement, and the client said that it doesn't matter, and that if I have a good reason we can use other technology. But, I have to justify the decision. As a Project Manager / Analyst I'm interested in making the project in Java because: The team knows java much better, regarding the language and frameworks I don't know anything about .NET technology (and maybe we could make bad decisions thinking in a Java way to do things) There are other people in company that have more skills in .NET but they have other projects with more priority. For experience, I'm sure that if we use Java, the project will have much more quality. But this arguments could be weak from the client perspective. How can I justify making the project in Java? EDIT: I'm not asking if one technology is better than other. "It's not a technology war" question.

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• D20 java engine

  - by javydreamercsw

  I'm trying to incorporate PCGen into my application to avoid recreating the wheel for D20 system. (Are there any other libraries out there?) In other words I would like to use PCGen as a library and do things like: CRUD characters (and all related information) Experience/level managements I don't need the GUI part of it just the information to pass to my application. This is a scenario I can think of: 1. Load available custom classes 2. Create a new Character/NPC 3. Transfer the stats to my system 4. Player keeps playing so I need to update experience 5. Save player in my system and recreate it later. I'm trying to start to create a character from PCClass with no luck. Looking at the code it seems it'll try to load it. I assume load from a file generated from the GUI. Is there a way of bypassing the GUI for all this? I was looking for a tutorial of some sorts without luck. I was able to figure out how to use the dice within PCGen but that's about it. Any ideas?

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• Web Seminar - Java EE 5.0 New Features

  What's new and how to use it

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• Securing Your Java ARchive (JAR) Files

  If your JAR needs the capability to access resources outside the JVM, sign it. The user can then feel secure in granting the required permission for your JAR to perform its actions.

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• Securing Your Java ARchive (JAR) Files

  If your JAR needs the capability to access resources outside the JVM, sign it. The user can then feel secure in granting the required permission for your JAR to perform its actions.

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• Java EE and GlassFish Server ??????????

  - by Hiro

  "The Aquarium"????·??????????????????????????GlassFish Server??????????????????????? ?????????????????????????????????????????GlassFish Server??????????????????????????????????? GlassFish Server???????·????????(????????????????????)????????? ????·?????????????"GlassFish Server 4"???????????????????2014????????·???(????·???????GlassFish Server 4.1)?????????????? ????????????Oracle Fusion Middleware 11g?Media Pack??Oracle GlassFish Server 3.1.2??????????????????????????????(????Oracle GlassFish Server 4.x)?????????????? Oracle GlassFish Server 3.1.2????????????????????Oracle GlassFish Server 2.1.x???3.1.x????????·????·???????????????????? ?????

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• ????????!?Oracle DBA & Developer Day 2012? ????????

  - by OTN-J Master

  ?????!DBA & Developer Day ??????????????????????????????!????????????DBA & Developer Day ???????????????????????????????????????????????????????????????????????????????????? OTN ??????????????????? ???????????????????????????????????????????????????????????????????Oracle Database Cloud Service??????????????????????????????·?????????Michael Hichwa??????Oracle OpenWorld 2012 ????????????????????????????????????Oracle Database Cloud Service???????????????????????????????????????????????????????????????????????Pluggable Database(???????????)??????????????????????????? ????2?????????6????????????24???????????????????????? Oracle Database ???????? ???????(MAA) Oracle Database ???????? BIG DATA Oracle Fusion Middleware???????? Oracle Solaris OTN ?????????????????????????????????????? – ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? (???????????????????????)??????SPARC T4-1????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????????24?????????(??·??)??????????! ????????????????????????????????????? (????: ?????????????????????????????????????????????)  

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