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  • Tab Sweep - Java EE wins, Prime Faces JSF, NetBeans, Jelastic for GlassFish, BeanValidation, Ewok and more...

    - by alexismp
    Recent Tips and News on Java, Java EE 6, GlassFish & more : • PrimeFaces 3.2 Final Released (primefaces.org) • Java EE wins over Spring (Bill Burke) • Customizing Components in JSF 2.0 (Mr. Bool) • Key to the Java EE 6 Platform: NetBeans IDE 7.1.x (OTN) • How to use GlassFish’s Connection Pool in Jelastic (jelastic.com) • Bean Validation 1.1 early draft 1 is out - time for feedback (Emmanuel) • Code artifacts published for Bean Validation 1.1 early draft 1 (Emmanuel) • Aprendendo Java EE 6 com GlassFish 3 e NetBeans 7.1 (Marcello) • JavaEE6 and the Ewoks (Murat)

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  • Les Techn'Oracle Et Les Sales'Oracle Sont Là !

    - by swalker
    Les Techn'Oracle et les Sales'Oracle sont lancées en région. Comme chaque année, plusieurs centaines de collaborateurs de nos Partenaires vont se former sur nos offres et nos produits les plus récents ! Les Techn'Oracle visent à présenter le contenu technique de nos produits, et leurs avantages pour les Clients, en terme d'architecture, de TCO, de flexibilité pour les Systèmes d'Information. Les Sales'Oracle ont pour objet de montrer la valeur de nos offres en termes Clients, le "à quoi ça sert" pour permettre aux Partenaires d'augmenter leur présence et leurs revenus chez nos Clients >> Rendez-vous sur le Calendrier pour les dates et les thèmes ici

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  • Setup a Autoreply Only Account

    - by dabrain
    For some very good reason you might would like to setup a 'autoreply' only account, without storing the incoming mail into a mailbox. If not already done, create an account via Delegated Admin Gui or commadmin Commandline Tool. Example: /opt/sun/comms/da/bin/commadmin user create -D admin -d vmdomain.tld -w enigma -F Mike -l    mparis -L Paris -W tester -E [email protected] -S mail -H mars.vmdomain.tld Setup mailDeliveryOption to autoreply mode only, so no email will be stored in the user mailbox, skip this step if you want incoming emails stored in the mailbox. ldapmodify -D "cn=Directory Manager" -w enigma -f /tmp/modfile [/tmp/modfile] dn: uid=mparis,ou=People,o=vmdomain.tld,o=red changetype: modify replace: mailDeliveryOption mailDeliveryOption: autoreply Setup mailSieveRuleSource with the autoreply text and 'do-not-reply' From address. The "Thank you ..." part becomes the subject. The next string in quotes is the body part of the message. The ":hours 0" denotes that we want a reply sent for every message. Finally,  the \n is used because of the wanted newlines in the body. ldapmodify -D "cn=Directory Manager" -w enigma -f /tmp/addfile [/tmp/addfile] dn: uid=mparis,ou=People,o=vmdomain.tld,o=red changetype: modify add: mailSieveRuleSource mailSieveRuleSource: require "vacation"; vacation :hours 0 :reply :from "do-not-reply   @domain.com" :subject "Thank you for contacting webpost" "Your Mail is being review   ed.\nTo access contact information please visit : http://www.domain.com \nPlease do    not reply to this e-mail as it is an automated response on your mail being accessed   .\n\nPublic Respose Unit.\n"

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  • YouTube: Promotional AgroSense Movie

    - by Geertjan
    Here's a cool YouTube promotional movie on AgroSense created by Ordina in the Netherlands. AgroSense is an open source Java system for the precision agriculture industry, which won the IT Environment Award in the Netherlands last week: If your understanding of Dutch limits your appreciation of the movie above, here's a rough translation, together with the names of the speakers in the movie: Precision agriculture, an innovative form of agriculture in which local variations in soil, crop, and atmosphere are taken into account, is the high-tech sustainable agriculture of tomorrow. The use of fertilizer, water, and energy can in this way be significantly reduced. "If, ten or twenty years from now, we are to continue having our agricultural industry in good shape, and in a continuing state of health, we'll need to register and work with data because if we want to enable crops to provide higher value, we'll need to create higher levels of transparency throughout the agriculture chain." Lenus Hamster, farmer in Nieuwolda Groningen "Industry is becoming increasingly data intensive. By combining pragmatic usefulness with innovative sustainability, AgroSense offers the Netherlands the possibility to continue being a leading player in the agrofood sector." Art Lighthart, Architect at Ordina AgroSense offers an open source solution in which all services for precision agriculture are brought together. In 2012, co-operation is being sought with organizations to make AgroSense available to around 10,000 Dutch farmers in the arable crop sector. By the way, the last sentence above implies the NetBeans Platform will be used by around 10,000 Dutch farmers.

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  • APEX Tabs als Pulldown-Menü: wie im Application Builder

    - by carstenczarski
    Jeder kennt die Reiterkarten im APEX Application Builder, mit der eleganten Möglichkeit, das Untermenü als Pulldown-Menü aufzuklappen. Und viele fragen sich, wie man sowas in eigenen APEX-Anwendungen verwenden könnte. Spätestens, wenn man dabei noch mehr als eine Hiararchieebene unterstützen möchte, kommen APEX Reiterkarten (Tabs) nicht mehr in Frage, denn diese unterstützen nur zwei Ebenen. Im Internet findet sich der eine oder andere Tipp zum Thema; allerdings basieren viele dieser Tipps auf den JavaScript-Funktionen, die auch der Application Builder intern verwendet. Allerdings sind diese nicht dokumentiert - man kann sich also nicht darauf verlassen, dass der Ansatz in künftigen APEX-Versionen noch funktioniert. Besser ist es also, eine Lösung zu erstellen, die keinerlei Abhängigkeiten zu undokumentierten Funktionen hat. Dieser Tipp stellt eine Lösung auf der Basis von APEX-Listen vor. Listen haben den Vorteil, dass Sie beliebig geschachtelt werden können, bei Klick können sie auf beliebige Ziele verweisen und mit Listentemplates kann die Darstellung ebenfalls beliebig gestaltet werden. Mehr dazu in unserem aktuellen Tipp.

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  • Raspberry Pi and Java SE: A Platform for the Masses

    - by Jim Connors
    One of the more exciting developments in the embedded systems world has been the announcement and availability of the Raspberry Pi, a very capable computer that is no bigger than a credit card.  At $35 US, initial demand for the device was so significant, that very long back orders quickly ensued. After months of patiently waiting, mine finally arrived.  Those initial growing pains appear to have been fixed, so availability now should be much more reasonable. At a very high level, here are some of the important specs: Broadcom BCM2835 System on a chip (SoC) ARM1176JZFS, with floating point, running at 700MHz Videocore 4 GPU capable of BluRay quality playback 256Mb RAM 2 USB ports and Ethernet Boots from SD card Linux distributions (e.g. Debian) available So what's taking place taking place with respect to the Java platform and Raspberry Pi? A Java SE Embedded binary suitable for the Raspberry Pi is available for download (Arm v6/7) here.  Note, this is based on the armel architecture, a variety of Arm designed to support floating point through a compatibility library that operates on more platforms, but can hamper performance.  In order to use this Java SE binary, select the available Debian distribution for your Raspberry Pi. The more recent Raspbian distribution is based on the armhf (hard float) architecture, which provides for more efficient hardware-based floating point operations.  However armhf is not binary compatible with armel.  As of the writing of this blog, Java SE Embedded binaries are not yet publicly available for the armhf-based Raspbian distro, but as mentioned in Henrik Stahl's blog, an armhf release is in the works. As demonstrated at the just-completed JavaOne 2012 San Francisco event, the graphics processing unit inside the Raspberry Pi is very capable indeed, and makes for an excellent candidate for JavaFX.  As such, plans also call for a Pi-optimized version of JavaFX in a future release too. A thriving community around the Raspberry Pi has developed at light speed, and as evidenced by the packed attendance at Pi-specific sessions at Java One 2012, the interest in Java for this platform is following suit. So stay tuned for more developments...

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  • New Java EE/GlassFish Testimonial

    - by reza_rahman
    As you may be aware, we have been making a concerted effort to ask successful Java EE/GlassFish adopters to come forward with their stories. A number of such stories were shared at this year's GlassFish Community event at JavaOne. In addition to Adam Bien's testimonial (which we posted earlier), another story that really stands out is the one from Stephan Janssen. Stephan is one of the main organizers of Devoxx and the webmaster of the popular Parleys e-learning platform. Parleys, which won the Duke's Choice award this year, runs on GlassFish as does the Devoxx CFP/registration website. Stephan's story is particularly interesting because he talks about his reasons and experience of moving from Tomcat to GlassFish and from Spring to Java EE. See what Stephan had to say here.

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  • Using the full tty real estate with sqlplus

    - by katsumii
    I believe 'rlwrap' is widely used for adding 'sqlplus' the history function and command line editing. 'rlwrap' has other functions and here's my kludgy alias to force sqlplus to use the full real estate of yourtty. Be it PuTTy session from Windows or Linux gnome terminal. $ declare -f sqlplus sqlplus () { PRE_TEXT=$(resize |sed -n "1s/COLUMNS=/set linesize /p;2s/LINES=/set pagesize /p"|while read line; do printf "%s \ " "$line";done); if [ -z "$1" ]; then rlwrap -m -P "$PRE_TEXT" sqlplus /nolog; else if ! echo $1 | grep '^-' > /dev/null; then rlwrap -m -P "$PRE_TEXT connect $*" sqlplus /nolog; else command sqlplus $*; fi; fi }

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  • Recent uploaded slides for the Upgrade Talks last week

    - by Mike Dietrich
    Welcome 2011 :-) And here you'll find the newest talks Carol, Roy and Brian delivered last week in several cities (please find the also in the DOWNLOAD SLIDES section on the right side of this blog): Upgrade Methods and Upgrade Planning: Click here to Download and use the keyword: roy2011 +500 Slides Upgrade Workshop Presentation: Click here to Download and use the keyword (Schlüsselwort): upgrade112 Hope you had a nice weekend and wonderful weather, too, as we had yesterday south of Munich. Click pic for a higher resolution: Starnberg Lake - View towards the Alps

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  • RPi and Java Embedded GPIO: Java code to blink more LEDs

    - by hinkmond
    Now, it's time to blink the other GPIO ports with the other LEDs connected to them. This is easy using Java Embedded, since the Java programming language is powerful and flexible. Embedded developers are not used to this, since the C programming language is more popular but less easy to develop in. We just need to use a dynamic Java String array to map to the pinouts of the GPIO port names from the previous diagram posted. This way we can address each "channel" with an index into that String array. static String[] GpioChannels = { "0", "1", "4", "17", "21", "22", "10", "9" }; With this new dynamic array, we can streamline the main() of this Java program to activate all the ports. /** * @param args the command line arguments */ public static void main(String[] args) { FileWriter[] commandChannels; try { /*** Init GPIO port for output ***/ // Open file handles to GPIO port unexport and export controls FileWriter unexportFile = new FileWriter("/sys/class/gpio/unexport"); FileWriter exportFile = new FileWriter("/sys/class/gpio/export"); for (String gpioChannel : GpioChannels) { System.out.println(gpioChannel); // Reset the port unexportFile.write(gpioChannel); unexportFile.flush(); // Set the port for use exportFile.write(gpioChannel); exportFile.flush(); // Open file handle to port input/output control FileWriter directionFile = new FileWriter("/sys/class/gpio/gpio" + gpioChannel + "/direction"); // Set port for output directionFile.write(GPIO_OUT); directionFile.flush(); } And, then simply add array code to where we blink the LED to make it blink all the LEDS on and off at once. /*** Send commands to GPIO port ***/ commandChannels = new FileWriter[GpioChannels.length]; for (int channum=0; channum It's easier than falling off a log... or at least easier than C programming. Hinkmond

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  • AT&T Application Resource Analyzer in NetBeans IDE

    - by Geertjan
    Here at Øredev in Malmö I met Doug Sillars who does developer outreach for the AT&T Application Resource Optimizer. In this YouTube clip you see Doug explaining how it works and what it can do for optimizing performance of mobile applications. There's a free and open source Android app on GitHub that you can install on Android to collect data and then there's a Java Swing application for analyzing the results. And here's what that application looks like as a plugin in NetBeans IDE, click to enlarge the image, which shows the Android sources of the Data Collector, as well as the Data Analyzer ready to be used to collect data: Since the ARO Data Analyzer is written in Java and has JPanels defining its UI layer, integrating the user interface wasn't hard. Now working on the Actions, so there'll be a new ARO menu with start/stop data collecting menu items, etc, reusing as much of the original code as possible. That part is actually already working. I started up an Android emulator, then started the data collection process from the IDE. Now need to include the Actions for importing the data into the analyzer, together with a few other related features. A pretty cool feature in ARO is video capture, so that a movie can be made by ARO of all the steps taken on the device during the collection process, which will also be nice to have integrated into the NetBeans plugin. Ultimately, this will be handy for anyone creating Android applications in NetBeans IDE since they'll be able to use AT&T's ARO tool for optimizing the performance of the applications they're developing. It will also be useful for those using the built-in Cordova tools in NetBeans IDE to create iOS applications because ARO is also applicable to analyzing iOS application performance.

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  • JSF 2.2, Interceptors 1.2, and JPA 2.1 Replay: Java EE 7 Launch Webinar Technical Breakouts on YouTube

    - by arungupta
    As stated previously (here, here, and here), the On-Demand Replay of Java EE 7 Launch Webinar is already available. You can watch the entire Strategy and Technical Keynote there, and all other Technical Breakout sessions as well. We are releasing the next set of Technical Breakout sessions on GlassFishVideos YouTube channel as well. In this series, we are releasing JSF 2.2, Interceptors 1.2, and JPA 2.1. Here's the JSF 2.2 session: Here's the Interceptors 1.1 session: Here's the JPA 2.1 session: Enjoy watching them over the next few days before we release the next set of videos! And don't forget to download Java EE 7 SDK and try numerous bundled samples.

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  • JMX Monitoring of GlassFish Servers

    - by tjquinn
    Did you ever wonder what this message in your GlassFish server.log file means? JMXStartupService has started JMXConnector on JMXService URL service:jmx:rmi://192.168.2.102:8686/jndi/rmi://192.168.2.102:8686/jmxrmi It means you can monitor any GlassFish server process, remotely or locally, using any standard Java Management Extensions (JMX) client.  Examples: jconsole or jvisualvm.   Copy the part of the log message that starts with "service:" into the Add JMX Connection dialog of jvisualvm:  or into the New Connection dialog of jconsole: (The full string is truncated in the on-screen display, but if you copied from the server.log and pasted into the form it should all be there.) The examples above are for a DAS, and your host will probably be different.   The server.log files for other GlassFish servers (instances) will have similar log entries giving the JMX connection string to use for those processes.  Look for the host and/or port to be different. Note a few things about security: Here we've assumed you are using the default admin username and password.  If you are not, just enter a valid admin username and password for your installation.  Once connected, you have normal access to all the JVM statistics and controls. You can use JMX clients that support MBeans to view the GlassFish configuration.  When you connect to the DAS, you can also change that configuration, but you can only view configuration when you connect to an instance. To use a JMX client on one system to connect to a GlassFish server running on another system, you need to enable secure admin if you have not already done so: asadmin change-admin-password (respond to the prompts) asadmin enable-secure-admin asadmin restart-domain (as prompted in the output from enable-secure-admin)

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  • ADF Desktop Integration Page Now Live on OTN

    - by juan.ruiz
    I’m happy to announce that we have launched the  ADF Desktop Integration home page on OTN. This page will centralize all the resources related to desktop integration. As you can notice, currently we are providing a variety of resources to help you understand the technology as well as to improve your overall ADF desktop integration learning experience. Let us know what you think about the page and what additional resources related to ADF desktop integration you would like us to include.

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  • The Sound of Two Toilets Flushing: Constructive Criticism for Virgin Atlantic Complaints Department

    - by Geertjan
    I recently had the experience of flying from London to Johannesburg and back with Virgin Atlantic. The good news was that it was the cheapest flight available and that the take off and landing were absolutely perfect. Hence I really have no reason to complain. Instead, I'd like to offer some constructive criticism which hopefully Richard Branson will find sometime while googling his name. Or maybe someone from the Virgin Atlantic Complaints Department will find it, whatever, just want to put this information out there. Arrangement of restroom facilities. Maybe next time you design an airplane, consider not putting your toilets at a right angle right next to your rows of seats. Being able to reach, without even needing to stretch your arm, from your seat to close, yet again, a toilet door that someone, someone obviously sitting very far from the toilets, carelessly forgot to close is not an indicator of quality interior design. Have you noticed how all other airplanes have their toilets in a cubicle separated from the rows of seats? On those airplanes, people sitting in the seats near the toilets are not constantly being woken up throughout the night whenever someone enters/exits the toilet, whenever the light in the toilet is suddenly switched on, and whenever one of the toilets flushes. Bonus points for Virgin Atlantic passengers in the seats adjoining the toilets is when multiple toilets are flushed simultaneously and multiple passengers enter/exit them at the same time, a bit like an unasked for low budget musical of suddenly illuminated grumpy people in crumpled clothes. What joy that brings at 3 AM is hard to describe. Seats with extra leg room. You know how other airplanes have the seats with the extra leg room? You know what those seats tend to have? Extra leg room. It's really interesting how Virgin Atlantic's seats with extra leg room actually have no extra leg room at all. It should have been a give away, the fact that these special seats are found in the same rows as the standard seats, rather than on the cusp of real glory which is where most airlines put their extra leg room seats, with the only actual difference being that they have a slightly different color. Had you called them "seats with a different color" (i.e., almost not quite green, rather than something vaguely hinting at blue), at least I'd have known what I was getting. Picture the joy at 3 AM, rudely awakened from nightmarish slumber, partly grateful to have been released from a grayish dream of faceless zombies resembling one or two of those in a recent toilet line, by multiple adjoining toilets flushing simultaneously, while you're sitting in a seat with extra leg room that has exactly as much leg room as the seats in neighboring rows. You then have a choice of things to be sincerely annoyed about. Food from the '80's. In the '80's, airplane food came in soggy containers and even breakfast, the most important meal of the day, was a sad heap of vaguely gray colors. The culinary highlight tended to be a squashed tomato, which must have been mashed to a pulp with a brick prior to being regurgitated by a small furry animal, and there was also always a piece of immensely horrid pumpkin, as well as a slice of spongy something you'd never seen before. Sausages and mash at 6 AM on an airplane was always a heavy lump of horribleness. Thankfully, all airlines throughout the world changed from this puke inducing strategy around 1987 sometime. Not Virgin Atlantic, of course. The fatty sausages and mash are still there, bringing you flashbacks to Duran Duran, which is what you were listening to (on your walkman) the last time you saw it in an airplane. Even the golden oldie "squashed tomato attached by slime to three wet peas" is on the menu. How wonderful to have all this in a cramped seat with a long row of early morning bleariness lined up for the toilets, right at your side, bumping into your elbow, groggily, one by one, one after another, more and more, fumble-open-door-silence-flush-fumble-open-door, and on and on, while you tentatively push your fork through a soggy pile of colorless mush, fighting the urge to throw up on the stinky socks of whatever nightmarish zombie is bumping into your elbow at the time. But, then again, the plane landed without a hitch, in fact, extremely smoothly, so I'm certainly not blaming the pilots.

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  • Reading OpenDocument spreadsheets using C#

    - by DigiMortal
    Excel with its file formats is not the only spreadsheet application that is widely used. There are also users on Linux and Macs and often they are using OpenOffice and other open-source office packages that use ODF instead of OpenXML. In this post I will show you how to read Open Document spreadsheet in C#. Importer as example My previous post about importers showed you how to build flexible importers support to your web application. This post introduces you practical example of one of my importers. Of course, sensitive code is omitted. We start with ODS importer class and we add new methods as we go. public class OdsImporter : ImporterBase {     public OdsImporter()     {     }       public override string[] SupportedFileExtensions     {         get { return new[] { "ods" }; }     }       public override ImportResult Import(Stream fileStream, long companyId, short year)     {         string contentXml = GetContentXml(fileStream);           var result = new ImportResult();         var doc = XDocument.Parse(contentXml);           var rows = doc.Descendants("{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table-row").Skip(1);           foreach (var row in rows)         {             ImportRow(row, companyId, year, result);         }           return result;     } } The class given here just extends base class for importers (previous post uses interface but as I already told there you move to abstract base class when writing code for real projects). Import method reads data from *.ods file, parses it (it is XML), finds all data rows and imports data. As you may see then first row is skipped. This is because the first row on my sheet is always headers row. Reading ODS file Our import method starts with getting XML from *.ods file. ODS files like OpenXml files are zipped containers that contain different files. We need content.xml as all data is kept there. To get the contents of file we use SharpZipLib library to read uploaded file as *.zip file. private static string GetContentXml(Stream fileStream) {     var contentXml = "";       using (var zipInputStream = new ZipInputStream(fileStream))     {         ZipEntry contentEntry = null;         while ((contentEntry = zipInputStream.GetNextEntry()) != null)         {             if (!contentEntry.IsFile)                 continue;             if (contentEntry.Name.ToLower() == "content.xml")                 break;         }           if (contentEntry.Name.ToLower() != "content.xml")         {             throw new Exception("Cannot find content.xml");         }           var bytesResult = new byte[] { };         var bytes = new byte[2000];         var i = 0;           while ((i = zipInputStream.Read(bytes, 0, bytes.Length)) != 0)         {             var arrayLength = bytesResult.Length;             Array.Resize<byte>(ref bytesResult, arrayLength + i);             Array.Copy(bytes, 0, bytesResult, arrayLength, i);         }         contentXml = Encoding.UTF8.GetString(bytesResult);     }     return contentXml; } If here is content.xml file then we stop browsing the file. We read this file to memory and return it as UTF-8 format string. Importing rows Our last task is to import rows. We use special method for this as we have to handle some tricks here. To keep files smaller the cell count on row is not always the same. If we have more than one empty cell one after another then ODS keeps only one cell for sequential empty cells. This cell has attribute called number-columns-repeated and it’s value is set to the number of sequential empty cells. This is why we use two indexers for cells collection. private void ImportRow(XElement row, ImportResult result) {     var cells = (from c in row.Descendants()                 where c.Name == "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table-cell"                 select c).ToList();       var dto = new DataDto();       var count = cells.Count;     var j = -1;       for (var i = 0; i < count; i++)     {         j++;         var cell = cells[i];         var attr = cell.Attribute("{urn:oasis:names:tc:opendocument:xmlns:table:1.0}number-columns-repeated");         if (attr != null)         {             var numToSkip = 0;             if (int.TryParse(attr.Value, out numToSkip))             {                 j += numToSkip - 1;             }         }           if (i > 30) break;         if (j == 0)         {             dto.SomeProperty = cells[i].Value;         }         if (j == 1)         {             dto.SomeOtherProperty = cells[i].Value;         }         // some more data reading     }       // save data } You can define your own class for import results and add there all problems found during data import. Your application gets the results and shows them to user. Conclusion Reading ODS files may seem to complex task but actually it is very easy if we need only data from those documents. We can use some zip-library to get the content file and then parse it to XML. It is not hard to go through the XML but there are some optimization tricks we have to know. The code here is safe to use in web applications as it is not using any API-s that may have special needs to server and infrastructure.

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  • Loosely Coupled Tabs in Java Editor

    - by Geertjan
    One of the NetBeans Platform 7.1 API enhancements is the @MultiViewElement.Registration annotation. That lets you add a new tab to any existing NetBeans editor. Really powerful since I didn't need to change the sources (or even look at the sources) of the Java editor to add the "Visualizer" tab to it, as shown below: Right now, the tab doesn't show anything, that will come in the next blog entry. The point here is to show how to set things up so that you have a new tab in the Java editor, without needing to touch any of the NetBeans IDE sources: And here's the code, take note of the annotation, which registers the JPanel for the "text/x-java" MIME type: import javax.swing.Action; import javax.swing.JComponent; import javax.swing.JPanel; import javax.swing.JToolBar; import org.netbeans.core.spi.multiview.CloseOperationState; import org.netbeans.core.spi.multiview.MultiViewElement; import org.netbeans.core.spi.multiview.MultiViewElementCallback; import org.openide.awt.UndoRedo; import org.openide.loaders.DataObject; import org.openide.util.Lookup; import org.openide.util.NbBundle; import org.openide.windows.TopComponent; @MultiViewElement.Registration(displayName = "#LBL_Visualizer", iconBase = "org/java/vis/icon.gif", mimeType = "text/x-java", persistenceType = TopComponent.PERSISTENCE_NEVER, preferredID = "JavaVisualizer", position = 3000) @NbBundle.Messages({     "LBL_Visualizer=Visualizer" }) public class JavaVisualizer extends JPanel implements MultiViewElement {     private JToolBar toolbar = new JToolBar();     private DataObject obj;     private MultiViewElementCallback mvec;     public JavaVisualizer(Lookup lkp) {         obj = lkp.lookup(DataObject.class);         assert obj != null;     }     @Override     public JComponent getVisualRepresentation() {         return this;     }     @Override     public JComponent getToolbarRepresentation() {         return toolbar;     }     @Override     public Action[] getActions() {         return new Action[0];     }     @Override     public Lookup getLookup() {         return obj.getLookup();     }     @Override     public void componentOpened() {     }     @Override     public void componentClosed() {     }     @Override     public void componentShowing() {     }     @Override     public void componentHidden() {     }     @Override     public void componentActivated() {     }     @Override     public void componentDeactivated() {     }     @Override     public UndoRedo getUndoRedo() {         return UndoRedo.NONE;     }     @Override     public void setMultiViewCallback(MultiViewElementCallback mvec) {         this.mvec = mvec;     }     @Override     public CloseOperationState canCloseElement() {         return CloseOperationState.STATE_OK;     } } It's a fair amount of code, but mostly pretty self-explanatory. The loosely coupled tabs are applicable to all NetBeans editors, not just the Java editor, which is why the "History" tab is now available to all editors throughout NetBeans IDE. In the next blog entry, you'll see the integration of the Visual Library into the panel I embedded in the Java editor.

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  • JavaOne - Java SE Embedded Booth - Servergy Micro Server

    - by David Clack
    Hi All,  So it's been awhile, I've been working with all the ARM and Power Architecture partners we have now on testing Java SE Embedded. We will have a Java SE Embedded for ARM and PPC at Java One next week, I'll be bringing in some of the great ARM and PPC systems to demonstrate.  The first system I'd like to tell you about is a really cool 8 core Power Architecture Micro Server from a company in Dallas called Servergy. Java One will be it's first public outing, Bill Mapp the CEO will be doing a talk at the Java Embedded @ JavaOne conference in the Hotel Nikko, right next door to the JavaOne show in the Hilton. To read more about Servergy https://www.linux.com/news/enterprise/cloud-computing/641488-linux-based-servergy-advances-data-center-efficiency http://www.servergy.com/ If you are registered at JavaOne you can come over to the Java Embedded @ JavaOne for $100 Come see us in booth 5605 See you there Dave

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  • Unlock the Java EE 6 Platform using NetBeans 7.1

    - by arungupta
    NetBeans IDE provide tools, templates, and code generators that can be used for the specifications that are part of the Java EE 6 Platform. In a recent article Geertjan builds a simple end-to-end application using the standard Model-View-Controller architecture. It uses Java Persistence API 2, Servlets 3, JavaServer Faces 2, Enterprise Java Beans 3.1, Context and Dependency Injection 1.0, and Java API for RESTful Web Services 1.1 showing the complete stack. A self-paced and an extensive hands-on lab covering this article and much more is also available here. A video (47-minutes) explaining how to build a similar application can be viewed here.

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  • Session Report - Modern Software Development Anti-Patterns

    - by Janice J. Heiss
    In this standing-room-only session, building upon his 2011 JavaOne Rock Star “Diabolical Developer” session, Martijn Verburg, this time along with Ben Evans, identified and explored common “anti-patterns” – ways of doing things that keep developers from doing their best work. They emphasized the importance of social interaction and team communication, along with identifying certain psychological pitfalls that lead developers astray. Their emphasis was less on technical coding errors and more how to function well and to keep one’s focus on what really matters. They are the authors of the highly regarded The Well-Grounded Java Developer and are both movers and shakers in the London JUG community and on the Java Community Process. The large room was packed as they gave a fast-moving, witty presentation with lots of laughs and personal anecdotes. Below are a few of the anti-patterns they discussed.Anti-Pattern One: Conference-Driven DeliveryThe theme here is the belief that “Real pros hack code and write their slides minutes before their talks.” Their response to this anti-pattern is an expression popular in the military – PPPPPP, which stands for, “Proper preparation prevents piss-poor performance.”“Communication is very important – probably more important than the code you write,” claimed Verburg. “The more you speak in front of large groups of people the easier it gets, but it’s always important to do dry runs, to present to smaller groups. And important to be members of user groups where you can give presentations. It’s a great place to practice speaking skills; to gain new skills; get new contacts, to network.”They encouraged attendees to record themselves and listen to themselves giving a presentation. They advised them to start with a spouse or friends if need be. Learning to communicate to a group, they argued, is essential to being a successful developer. The emphasis here is that software development is a team activity and good, clear, accessible communication is essential to the functioning of software teams. Anti-Pattern Two: Mortgage-Driven Development The main theme here was that, in a period of worldwide recession and economic stagnation, people are concerned about keeping their jobs. So there is a tendency for developers to treat knowledge as power and not share what they know about their systems with their colleagues, so when it comes time to fix a problem in production, they will be the only one who knows how to fix it – and will have made themselves an indispensable cog in a machine so you cannot be fired. So developers avoid documentation at all costs, or if documentation is required, put it on a USB chip and lock it in a lock box. As in the first anti-pattern, the idea here is that communicating well with your colleagues is essential and documentation is a key part of this. Social interactions are essential. Both Verburg and Evans insisted that increasingly, year by year, successful software development is more about communication than the technical aspects of the craft. Developers who understand this are the ones who will have the most success. Anti-Pattern Three: Distracted by Shiny – Always Use the Latest Technology to Stay AheadThe temptation here is to pick out some obscure framework, try a bit of Scala, HTML5, and Clojure, and always use the latest technology and upgrade to the latest point release of everything. Don’t worry if something works poorly because you are ahead of the curve. Verburg and Evans insisted that there need to be sound reasons for everything a developer does. Developers should not bring in something simply because for some reason they just feel like it or because it’s new. They recommended a site run by a developer named Matt Raible with excellent comparison spread sheets regarding Web frameworks and other apps. They praised it as a useful tool to help developers in their decision-making processes. They pointed out that good developers sometimes make bad choices out of boredom, to add shiny things to their CV, out of frustration with existing processes, or just from a lack of understanding. They pointed out that some code may stay in a business system for 15 or 20 years, but not all code is created equal and some may change after 3 or 6 months. Developers need to know where the code they are contributing fits in. What is its likely lifespan? Anti-Pattern Four: Design-Driven Design The anti-pattern: If you want to impress your colleagues and bosses, use design patents left, right, and center – MVC, Session Facades, SOA, etc. Or the UML modeling suite from IBM, back in the day… Generate super fast code. And the more jargon you can talk when in the vicinity of the manager the better.Verburg shared a true story about a time when he was interviewing a guy for a job and asked him what his previous work was. The interviewee said that he essentially took patterns and uses an approved book of Enterprise Architecture Patterns and applied them. Verburg was dumbstruck that someone could have a job in which they took patterns from a book and applied them. He pointed out that the idea that design is a separate activity is simply wrong. He repeated a saying that he uses, “You should pay your junior developers for the lines of code they write and the things they add; you should pay your senior developers for what they take away.”He explained that by encouraging people to take things away, the code base gets simpler and reflects the actual business use cases developers are trying to solve, as opposed to the framework that is being imposed. He told another true story about a project to decommission a very long system. 98% of the code was decommissioned and people got a nice bonus. But the 2% remained on the mainframe so the 98% reduction in code resulted in zero reduction in costs, because the entire mainframe was needed to run the 2% that was left. There is an incentive to get rid of source code and subsystems when they are no longer needed. The session continued with several more anti-patterns that were equally insightful.

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  • Play Majesty: The Fantasy Kingdom Sim on your Java ME phone

    - by hinkmond
    Here's a game that started on on the iDrone, then Anphoid, and now finally on Java ME tech-enabled mobile phones (thank goodness!). See: Majesty: Fantasy Kingdom Here's a quote: When you become the head of the country all the responsibility for the land's prosperity rests on your royal shoulders. You will have to fight various enemies and monsters, explore new territories, manage economic and scientific developments and solve a heap of unusual and unexpected tasks. For example, what will you do when all the gold in the kingdom transforms into cookies? Sounds like the same as becoming President of the U.S... except for the gold turning into cookies part... and the part about dragons. But, everything else is the same. Hinkmond

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  • JDK bug migration: bugs.sun.com now backed by JIRA

    - by darcy
    The JDK bug migration from a Sun legacy system to JIRA has reached another planned milestone: the data displayed on bugs.sun.com is now backed by JIRA rather than by the legacy system. Besides maintaining the URLs to old bugs, bugs filed since the migration to JIRA are now visible too. The basic information presented about a bug is the same as before, but reformatted and using JIRA terminology: Instead of a "category", a bug now has a "component / subcomponent" classification. As outlined previously, part of the migration effort was reclassifying bugs according to a new classification scheme; I'll write more about the new scheme in a subsequent blog post. Instead of a list of JDK versions a bug is "reported against," there is a list of "affected versions." The names of the JDK versions have largely been regularized; code names like "tiger" and "mantis" have been replaced by the release numbers like "5.0" and "1.4.2". Instead of "release fixed," there are now "Fixed Versions." The legacy system had many fields that could hold a sequence of text entries, including "Description," "Workaround", and "Evaluation." JIRA instead only has two analogous fields labeled as "Description" and a unified stream of "Comments." Nearly coincident with switching to JIRA, we also enabled an agent which automatically updates a JIRA issue in response to pushes into JDK-related Hg repositories. These comments include the changeset URL, the user making the push, and a time stamp. These comments are first added when a fix is pushed to a team integration repository and then added again when the fix is pushed into the master repository for a release. We're still in early days of production usage of JIRA for JDK bug tracking, but the transition to production went smoothly and over 1,000 new issues have already been filed. Many other facets of the migration are still in the works, including hosting new incidents filed at bugs.sun.com in a tailored incidents project in JIRA.

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  • Ambiguous Comparison Hint

    - by Ondrej Brejla
    Hi everybody! Today we would like to show you some new hint which will be available in NetBeans 7.3. It's called Ambiguous Comparison hint. Its name seems to be quite fuzzy, but it describes exactly what the hint does. It tries to check all comparisons whether they are intended. Because sometimes you want to make a simple assignment, but you make a typo and comparison appears. It's really dangerous mistake because then your code doesn't work as expected. Your application can produce buggy results. So here is how it looks like: But sometimes a comparison is really intended. E.g. in return statements when you want to return a boolean, so then the hint works as expected and no warning appears. That's all for today and as usual, please test it and if you find something strange, don't hesitate to file a new issue (component php, subcomponent Editor). Thanks.

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  • Architecture: Bringing Value to the Table

    - by Bob Rhubart
    A recent TechTarget article features an interview with Business Architecture expert William Ulrich (Take a business-driven approach to application modernization ). In that article Ulrich offers this advice: "Moving from one technical architecture might be perfectly viable on a project by project basis, but when you're looking at the big picture and you want to really understand how to drive business value so that the business is pushing money into IT instead of IT pulling money back, you have to understand the business architecture. When we do that we're going to really be able to start bringing value to the table." In many respects that big picture view is what software architecture is all about. As an architect, your technical skills must be top-notch. But if you don't apply that technical knowledge within the larger context of moving the business forward, what are you accomplishing? If you're interested in more insight from William Ulrich, you can listen to the ArchBeat Podcast interview he did last year, in which he and co-author Neal McWhorter talked about their book, Business Architecture: The Art and Practice of Business Transformation.

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