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• ZeroTurnaround s'apprête à sortir la version 3.0 de JRebel un outil de productivité pour les dévelop

  Bonjour, La version 3.0 de JRebel est prévue pour le 16 avril. Présentation succincte de JRebel (anciennement JavaRebel) : Citation: L'outil JRebel permet d'améliorer la productivité du développement Java. Il se présente sous la forme d'un agent pour la JVM qui permet le remplacement à chaud du bytecode des classes de l'application. Par conséquent, une grande partie des modifications de code peut être prise en compte par l'application sans nécessiter de redémarrer cette dernière. ...

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• How do you transition from a desktop developer to a web based role?

  - by Fanatic23

  Background: Developer with loads of experience in desktop computing. C++, Java etc Wants to dabble in: Living social. Yeah, you guessed it right -- website development. Perhaps will need to learn PHP or Javascript, SOAP, XML etc. Positives: Knows nothing about ASP or jQuery -- clean slate really. What's that 1 piece of advice that you'd give here? Could be anything: choice of technology, frameworks, potential pitfall and portability issues etc.

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• QotD: Maurizio Cimadamore on Project Lambda Binary Snapshots

  - by $utils.escapeXML($entry.author)

  I'm glad to announce that the first binary snapshots of the lambda repository are available at the following URL:http://jdk8.java.net/lambda/As you can imagine, as the implementation of the compiler/libraries is still under heavy development, there are still many rough corners that need to be polished. I'd like to thank you all for all the patience and the valuable feedback provided so far - please keep it coming!Maurizio Cimadamore announcing the Project Lambda binary snapshots on the lambda-dev OpenJDK mailing list.

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• Technologies stack to create soccer game vizualization on web page [on hold]

  - by Lambrusco

  I want to create soccer game vizualization. What technologies will be best to create such one for web page? On input I have two teams with players. I have theory about their movements, the movement of the ball on field and so on. I just want to vizualize their movements. What will be the best technology stack? I mean programming languages (C++, Ruby, Java, PHP) and vizualization ways (Flash, HTML5, JS)

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• What's Hot in our Community Right Now

  - by KJones

  Here’s a look at what our Oracle University community members are reading and sharing the most this month: Free Training On Demand Lessons: Oracle Database 12c New Features for Administrators Infographic: Why Oracle University Should Be Your First Choice for Oracle Training Blog: Coolest Features of Hyperion 11.1.2.3 according to Oracle University Blog:  Developing Java Apps for Embedded Devices New Training Release: Oracle Database 12c: ASM Administration Join our communities to stay plugged into the newest Oracle University releases. -Kate Jones, Oracle University Senior Marketing Manager

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• What is meant by a primitive data type?

  - by Appy

  My understanding of a primitive datatype is that It is a datatype provided by a language implicitly (Others are user defined classes) So different languages have different sets of datatypes which are considered primitive for that particular language. Is that right? And what is the difference between a "basic datatype" and "built-in datatype". Wikipedia says a primitive datatype is either of the two. PS - Why is "string" type considered as a primitive type in SNOBOL4 and not in Java ?

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• "static" as a semantic clue about statelessness?

  - by leoger

  this might be a little philosophical but I hope someone can help me find a good way to think about this. I've recently undertaken a refactoring of a medium sized project in Java to go back and add unit tests. When I realized what a pain it was to mock singletons and statics, I finally "got" what I've been reading about them all this time. (I'm one of those people that needs to learn from experience. Oh well.) So, now that I'm using Spring to create the objects and wire them around, I'm getting rid of static keywords left and right. (If I could potentially want to mock it, it's not really static in the same sense that Math.abs() is, right?) The thing is, I had gotten into the habit of using static to denote that a method didn't rely on any object state. For example: //Before import com.thirdparty.ThirdPartyLibrary.Thingy; public class ThirdPartyLibraryWrapper { public static Thingy newThingy(InputType input) { new Thingy.Builder().withInput(input).alwaysFrobnicate().build(); } } //called as... ThirdPartyLibraryWrapper.newThingy(input); //After public class ThirdPartyFactory { public Thingy newThingy(InputType input) { new Thingy.Builder().withInput(input).alwaysFrobnicate().build(); } } //called as... thirdPartyFactoryInstance.newThingy(input); So, here's where it gets touchy-feely. I liked the old way because the capital letter told me that, just like Math.sin(x), ThirdPartyLibraryWrapper.newThingy(x) did the same thing the same way every time. There's no object state to change how the object does what I'm asking it to do. Here are some possible answers I'm considering. Nobody else feels this way so there's something wrong with me. Maybe I just haven't really internalized the OO way of doing things! Maybe I'm writing in Java but thinking in FORTRAN or somesuch. (Which would be impressive since I've never written FORTRAN.) Maybe I'm using staticness as a sort of proxy for immutability for the purposes of reasoning about code. That being said, what clues should I have in my code for someone coming along to maintain it to know what's stateful and what's not? Perhaps this should just come for free if I choose good object metaphors? e.g. thingyWrapper doesn't sound like it has state indepdent of the wrapped Thingy which may itself be mutable. Similarly, a thingyFactory sounds like it should be immutable but could have different strategies that are chosen among at creation. I hope I've been clear and thanks in advance for your advice!

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• Savable in Widget Lookup on Move Action

  - by Geertjan

  Possible from 7.3 onwards, since Widget now implements Lookup.Provider for the first time: import java.awt.Point; import java.io.IOException; import org.netbeans.api.visual.action.ActionFactory; import org.netbeans.api.visual.action.MoveProvider; import org.netbeans.api.visual.widget.LabelWidget; import org.netbeans.api.visual.widget.Scene; import org.netbeans.api.visual.widget.Widget; import org.netbeans.spi.actions.AbstractSavable; import org.openide.util.Lookup; import org.openide.util.lookup.AbstractLookup; import org.openide.util.lookup.InstanceContent; import org.openide.windows.TopComponent; public class MyWidget extends LabelWidget { private MySavable mySavable; private Lookup lookup; private TopComponent tc; private InstanceContent ic; public MyWidget(Scene scene, String label, TopComponent tc) { super(scene, label); this.tc = tc; ic = new InstanceContent(); getActions().addAction(ActionFactory.createMoveAction(null, new MoveStrategyProvider())); } @Override public Lookup getLookup() { if (lookup == null) { lookup = new AbstractLookup(ic); } return lookup; } private class MoveStrategyProvider implements MoveProvider { @Override public void movementStarted(Widget widget) { } @Override public void movementFinished(Widget widget) { modify(); } @Override public Point getOriginalLocation(Widget widget) { return ActionFactory.createDefaultMoveProvider().getOriginalLocation(widget); } @Override public void setNewLocation(Widget widget, Point point) { ActionFactory.createDefaultMoveProvider().setNewLocation(widget, point); } } private void modify() { if (getLookup().lookup(MySavable.class) == null) { ic.add(mySavable = new MySavable()); } } private class MySavable extends AbstractSavable { public MySavable() { register(); } TopComponent tc() { return tc; } @Override protected String findDisplayName() { return getLabel(); } @Override protected void handleSave() throws IOException { ic.remove(mySavable); unregister(); } @Override public boolean equals(Object obj) { if (obj instanceof MySavable) { MySavable m = (MySavable) obj; return tc() == m.tc(); } return false; } @Override public int hashCode() { return tc().hashCode(); } } }

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• Creating Asynchronous Methods in EJB 3.1

  - by cindo

  Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} OBE of the Month: Creating Asynchronous Methods in EJB 3.1 This OBE covers creating an EJB 3.1 application that demonstrates the use of the @Asynchronous annotation in an Enterprise Java Bean (EJB) class or specific method. In this tutorial, you will create a Java EE 6 Web Application and add the following components to it - a Stateless Session Bean with two asynchronous methods. You define a Servlet to call the asynchronous methods and to keep track of the invocation and completion times to demonstrate the asynchronous nature of the method calls. The index.jsp will contain a form with a submit button, Run allowing you to execute the application. The form will submit to the Servlet which invokes the asynchronous methods defined in the session bean and the response is re-directed to response.jsp. Information about the asynchronous handling procedure is displayed to users. From this information, users will notice that the invoker thread and the called asynchronous thread are working concurrently. Check out this new OBE on the Oracle Learning Library: Creating Asynchronous Methods in EJB 3.1. This OBE is part of the new EJB 3.1 New Features Series. Related OBE’s that might interest you: Creating a No-Interface View Session Bean and Packaging in a WAR File Creating and Accessing a Session Bean in a  Web Application

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• generic programming- where did it originate?

  - by user997112

  Im trying to work out if generic programming was a functional programming feature which was then introduced into Java, C++ and C# or did the latter copy it from the functional programming languages like Haskell, Lisp, OCaml etc? Google is giving me lots on what generic programming is, but not where it originated. All I can see is that Ada implemented it early on. Would you class it as a functional programming technique?

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• The Learning Map

  - by user12652314

  Danny Hillis has always been a favorite since he opened the first Java Day back in 1995. Now it's great to see him talking about the challenge we are just about to address with our new "Learning Exchange" Industry Solution which brings all the power of Oracle technology to the address the challenge for lifelong learners. The current thought is to launch it at the Edu tech event at CES along with a special dinner reception with our content friends at Digital Hollywood. Stay tuned.

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• how can I update my Firefox 4.0 beta in Ubuntu 11.04 natty 64bit ?

  - by Denja

  Hi community, I'm using Ubuntu 11.04 natty 64bit with the integrated Firefox 4.0 beta Firefox 4.0 is not yet stable as beta and has lots of bugs when I open mainly Java applications in the web.Usually it freeze and even mess with Ubuntu gnome panel. It seems I cannot find any PPA related with Firefox beta updates in my Software source . How can I update my Firefox 4.0 beta in Ubuntu 11.04 natty 64bit?

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• aTunes - Full-featured audio player and manager

  <b>Ubuntu Geek:</b> "aTunes is a full-featured audio player and manager, developed in Java programming language, so it can be executed on different platforms: Windows, Linux and Unix-like systems"

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• Why don't languages include implication as a logical operator?

  - by Maciej Piechotka

  It might be a strange question, but why there is no implication as a logical operator in many languages (Java, C, C++, Python Haskell - although as last one have user defined operators its trivial to add it)? I find logical implication much clearer to write (particularly in asserts or assert-like expressions) then negation with or: encrypt(buf, key, mode, iv = null) { assert (mode != ECB --> iv != null); assert (mode == ECB || iv != null); assert (implies(mode != ECB, iv != null)); // User-defined function }

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• Control Media via Arduino

  - by Ohad

  I want to create an application that controls the volume, play next\last, stop\play and things like this (I don't know what they called) like in a keyboard. I have tried to find how to do this with Python\Java but I couldn't find how. The main idea is (if some-one knows what is arduino) to connect it to my PC (Ubuntu) and to get from it signals that gives me values and with this values to be able to change the volume and to do next song\video. Thanks to any one who help :)

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• Windows 7 Tips and Tricks: User Account Control Settings

  One of the most attractive aspects of Windows 7 is that it comes with so many improvements spread across different aspects of your PC. Keep reading for info on tweaking User Account Control settings the revival of the Run As feature an easy way to configure multiple printers on your laptop and how to use Windows Live MovieMaker to import files over a network.... $2.95/mo Web Hosting Unleashed Host your ASP.NET 3.5/2.0, & Java/JSP, PHP, Ruby, CGI, etc. web apps. 24/7/365.

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• Fin de LINQ to HPC : Microsoft abandonne sa plateforme de traitement de gros volumes de données pour son concurrent Hadoop

  Fin de LINQ to HPC : Microsoft abandonne sa plateforme de traitement de gros volumes de données pour se concentrer sur le support de son concurrent Hadoop Microsoft abandonne LINQ to HPC (High performance computing), nom de code Dryad, sa propre plateforme haute performance pour des calculs distribués et la gestion intensive des données, pour se concentrer sur le support de son concurrent Hadoop dans ses produits. L'éditeur avait récemment manifesté son intérêt pour la plateforme Java de stockage et de traitement par lot de très grandes quantités de données (Big Data) Hadoop, en publiant notamment deux connecteurs

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• Why aren't web frameworks simple, elegant and fun like programming languages? [on hold]

  - by Ryan

  When I think of pretty much any programming language - like C, C++, PHP, SQL, JavaScript, Python, ActionScript, Haskell, Lua, Lisp, Java, etc - I'm like awesome I would love to develop a computer application using any of those languages. But when I think of web frameworks(I do mostly PHP) - like Cake, CI, Symfony, Laravel, Zend, Drupal, Joomla, Wordpress, Rails, Django, etc - I'm like god no. Why aren't there web frameworks that provide me with simple, fun and powerful constructs like a programming language?

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• Xorg constant high cpu usage

  - by user157342

  CPU AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ Kernel 2.6.38-7.dmz.1-liquorix-amd64 X server version: X.Org X Server 1.9.0 OpenGL direct rendering: Yes OpenGL vendor: NVIDIA Corporation OpenGL renderer: GeForce 8400 GS/PCI/SSE2 OpenGL version: 3.3.0 NVIDIA 270.41.06 GCC version: 4.4.5 Java version: 1.6.0_20 Python version: 2.6.6 GTK version: 2.22.0 PyGTK version: 2.21.0 Firefox version: Mozilla Firefox 5.0 Ubuntu version: 10.10 GNOME version: 2.32.0 The issue is, the Xorg process always seems to be active with over 6% CPU and +50MB RAM usage, which in turn keeps the fans blowing all the time.

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• Brevets : Android de nouveau en danger, un consortium constitué d'Apple, Microsoft, Sony attaque en justice Google et plusieurs constructeurs

  Brevets : Android de nouveau en danger un consortium constitué d'Apple, Microsoft, Sony attaque en justice Google et plusieurs constructeurs Android de nouveau devant la barre. Après la grosse affaire de violation des brevets liés aux API Java ayant opposé Google à Oracle, Android va de nouveau faire face à une autre poursuite en justice qui pourrait bouleverser l'écosystème mobile.Le succès de la plateforme mobile de Google, qui détient désormais près de 70 % de part de marché du mobile, charme...

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• NEU: Oracle ADF Mobile - Anwendung für iOS und Android entwickeln

  - by Robert Baumgartner

  Oracle ADF Mobile steht ab sofort zur Verfügung. Es ist ein HTML5 und Java Mobile Development Framworw, dass es ermöglicht Enterprise Applications für iOS und Android Geräte (Handy und Tablet) mit einem Code zu entwickeln. Basieren auf einer hybriden Mobile Architektur werden auch gerätesprezifische Funktionen, wie z.B. die Kamera, unterstützt. Details zu Oracle ADF Mobile finden Sie unter Oracle ADF Mobile FAQs Demo ADF Mobile BLOG

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• How should I land my next consulting gig? [closed]

  - by MrOodles

  For the last couple of years, I've been working on speculative projects, expanding my skillset with side work, and paying the bills while having a blast consulting for startups. However, for a number of personal reasons, I need to spend the next 6-9 months maximizing my cash income. I want to put this into effect starting in early August. So that means I have one month to put the necessary client list/portfolio/resume together to start making this happen. As a programmer, I am very proficient in building Django web apps. I can write the necessary SQL, python, javascript, and css to build every part of a Django app, and then do the system administration necessary to deploy on AWS using EC2. I can also rig up a CDN to work seemlessly with the app using S3 and Cloudfront. I have built GIS applications using GeoDjango and PostGIS, and I have constructed social video apps by implementing Encoding.com as a service to prepare raw video files for consumption on the web. I am also moderately proficient in programming PHP, Java, and C#. I have built web apps in PHP, and desktop apps in Java and C#. I have dabbled with Android applications and iPhone apps, but nothing I would show off. I have experience doing SEO, social media marketing, and content marketing. Many of my clients have needed their apps promoted after they were built, and I was always happy to oblige when I could. I have also worked with biometrics technology including fingerprints for government contractors. This was as much a business analyst role as it was a programming gig, as I had to help answer RFPs, make checklists, and work around reems and reems of regulations to build applications that met very large bureaucratic requirements. I only have two real requirements for my next gig(s): 1) Work remotely. I live in North East Ohio, and I don't plan on leaving, but I wouldn't mind traveling one or two weeks out of every month to service clients who need on-site help. 2) $60.00hr-$∞ USD contracting rate. So what should I do for the next 30 days to achieve this? Should I target some large company and learn the requisite buzzwords to impress them? Should I learn some new language or technology? Polish some skill that I already have? Should I build something using my current skillset, or with some new technology? Should I put a website for my consultancy together to market myself? Should I do that using latest technology x, y, and z? Or should I just slap something up on Tumblr? I'm willing to do anything (moral) over the next 4 weeks to put myself into a position to maximize my income, and I'm open to all and every idea Programmers users may have. Let me hear them.

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• Quels jeux de composants open source utilisez-vous pour vos développements en JSF ? Partagez votre expérience

  Bonjour, L'équipe Java renouvelle l'initiative du sondage des jeux de composants Open Source utilisés dans les développements en JSF. Un précédent sondage couvrant la période 2008 à 2011 est disponible ici. Sans être exhaustif, les plus connus sont : Primefaces (sans doute le plus populaire maintenant) Richfaces Icefaces Apache Myfaces Tomahawk Apache Myfaces Trinidad Apache Myfaces Tobago Autres Nous souhaiterions par le biais de ce sondage que vous puissiez partager votre expérience concernant ces jeux de composants. Merci de la...

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• ArchBeat Link-o-Rama for 10-24-2012

  - by Bob Rhubart

  Play Oracle Vanquisher Here's a little respite from whatever it is you normally spend your time on. Oracle Vanquisher is an online diversion that makes a game of data center optimization. According to the description: "Armed with a cool Oracle vacuum pack suit and a strategic IT roadmap, you will thwart threats and optimize your data center to increase your company’s stock price and boost your company's position." Mainly you avoid electric shock and killer birds. The current high score belongs to someone identified as "TEN." My score? Never mind. Book: DevOps for Developers | The Java Source The subject of DevOps has come up in a couple of recent OTN ArchBeat Podcasts, so it's somewhat serendipitous that Tori Weildt's recent blog post offers an overview of Java Champion Michael Hutterman's new book, DevOps for Developers, now available from Apress. Bring Your Own Device (BYOD) : Context is everything… | The ORACLE-BASE Blog BOYD is a factor in the evolution of IT, but in what context? "The real IT work in companies is still being done on PCs," says Oracle ACE Director Tim Hall. "Yes, you can use a cloud service on your phone, but look around the office and you will see those cloud services are actually being used by people on PCs." Oracle in the Cloud: Oracle EBusiness Suite sizing | Tom Laszewski Cloud expert Tom Laszewski shares several technical resources that will be helpful for sizing of Oracle EBusiness Suite. Setting Up, Configuring, and Using an Oracle WebLogic Server Cluster Author and expert Yuli Vasiliev shows you how take advantage of multiple Oracle WebLogic Server instances grouped into a cluster to maximize scalability and availability. Webcast: Reduce Costs with Oracle's Database Storage Management Watch this! Join Oracle experts Kevin Jernigan and Margaret Hamburger for an interactive webcast in which you'll learn how Oracle's Database Storage Management can reduce storage costs and management complexity while improving query performance to meet service-level agreements and compliance requirements. Event Date: Tuesday, November 6, 2012 Event Time: 10 a.m. PT/1 p.m. ET Thought for the Day "Most software today is very much like an Egyptian pyramid with millions of bricks piled on top of each other, with no structural integrity, but just done by brute force and thousands of slaves." — Alan Kay Source: softwarequotes.com

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• How do you keep track of the authors of code?

  - by dustyprogrammer

  This is something I was never taught. I have seen alot of different types of authoring styles. I code primarily in Java and Python. I was wondering if there was a standard authoring style or if everything is freestyle. Also if you answer would you mind attaching the style you use to author files that your create at home or at work. I usually just go @author garbagecollector @company garbage inc.

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