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  • Fosfor EPUB Reader

    - by Geertjan
    Instead of creating a fullblown NetBeans Platform application for doing WYSIWYG editing for EPUB, similar to Sigil, I decided to focus purely on the very narrow scope of EPUB reading. The scope is narrower and, since the application will be a lot less ambitious and smaller, a pure JavaFX implementation makes sense. When you somehow get, e.g., buy, an EPUB file, you typically read it on a tablet or mobile device. However, some people in the world, e.g., me, still have laptops. Therefore, I'm creating a small JavaFX application that unzips EPUB files, into a temp directory, and then loads them into a JavaFX WebView. Arabic support: For an application like this, simplicity is the most important thing. Very few buttons, very few options, preferably no configuration of anything. Just let the user open the EPUB file and read it, that's it, nothing fancy. CSS stylesheets and images are correctly read. It's exactly what it looks like, a reader for EPUB files. The back and forward buttons are working and you can also switch to the table of contents. When it is complete, which it pretty much is right now, publishers of EPUB files can make this small app available from their site, to simplify life for their readers, since it will run easily and well on all operating systems.

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  • JPedal Action for Converting PDF to JavaFX

    - by Geertjan
    The question of the day comes from Mark Stephens, from JPedal (JPedal is the leading 100% Java PDF library, providing a Java PDF viewer, PDF to image conversion, PDF printing or adding PDF search and PDF extraction features), in the form of a screenshot: The question is clear. By looking at the annotations above, you can see that Mark has an ActionListener that has been bound to the right-click popup menu on PDF files. Now he needs to get hold of the file to which the Action has been bound. How, oh  how, can one get hold of that file? Well, it's simple. Leave everything you see above exactly as it is but change the Java code section to this: public final class PDF2JavaFXContext implements ActionListener {     private final DataObject context;     public PDF2JavaFXContext(DataObject context) {         this.context = context;     }     public void actionPerformed(ActionEvent ev) {         FileObject fo = context.getPrimaryFile();         File theFile = FileUtil.toFile(fo);         //do something with your file...     } } The point is that the annotations at the top of the class bind the Action to either Actions.alwaysEnabled, which is a factory method for creating always-enabled Actions, or Actions.context, which is a factory method for creating context-sensitive Actions. How does the Action get bound to the factory method? The annotations are converted, when the module is compiled, into XML registration entries in the "generated-layer.xml", which you can find in your "build" folder, in the Files window, after building the module. In Mark's case, since the Action should be context-sensitive to PDF files, he needs to bind his PDF2JavaFXContext ActionListener (which should probably be named "PDF2JavaFXActionListener", since the class is an ActionListener) to Actions.context. All he needs to do that is pass in the object he wants to work with into the constructor of the ActionListener. Now, when the module is built, the annotation processor is going to take the annotations and convert them to XML registration entries, but the constructor will also be checked to see whether it is empty or not. In this case, the constructor isn't empty, hence the Action should be context-sensitive and so the ActionListener is bound to Actions.context. The Actions.context will do all the enablement work for Mark, so that he will not need to provide any code for enabling/disabling the Action. The Action will be enabled whenever a DataObject is selected. Since his Action is bound to Nodes in the Projects window that represent PDF files, the Action will always be enabled whenever Mark right-clicks on a PDF Node, since the Node exposes its own DataObject. Once Mark has access to the DataObject, he can get the underlying FileObject via getPrimaryFile and he can then convert the FileObject to a java.io.File via FileUtil.getConfigFile. Once he's got the java.io.File, he can do with it whatever he needs. Further reading: http://bits.netbeans.org/dev/javadoc/

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  • The Raspberry Pi JavaFX In-Car System (Part 3)

    - by speakjava
    Ras Pi car pt3 Having established communication between a laptop and the ELM327 it's now time to bring in the Raspberry Pi. One of the nice things about the Raspberry Pi is the simplicity of it's power supply.  All we need is 5V at about 700mA, which in a car is as simple as using a USB cigarette lighter adapter (which is handily rated at 1A).  My car has two cigarette lighter sockets (despite being specified with the non-smoking package and therefore no actual cigarette lighter): one in the centre console and one in the rear load area.  This was convenient as my idea is to mount the Raspberry Pi in the back to minimise the disruption to the very clean design of the Audi interior. The first task was to get the Raspberry Pi to communicate using Wi-Fi with the ELM 327.  Initially I tried a cheap Wi-Fi dongle from Amazon, but I could not get this working with my home Wi-Fi network since it just would not handle the WPA security no matter what I did.  I upgraded to a Wi Pi from Farnell and this works very well. The ELM327 uses Ad-Hoc networking, which is point to point communication.  Rather than using a wireless router each connecting device has its own assigned IP address (which needs to be on the same subnet) and uses the same ESSID.  The settings of the ELM327 are fixed to an IP address of 192.168.0.10 and useing the ESSID, "Wifi327".  To configure Raspbian Linux to use these settings we need to modify the /etc/network/interfaces file.  After some searching of the web and a few false starts here's the settings I came up with: auto lo eth0 wlan0 iface lo inet loopback iface eth0 inet static     address 10.0.0.13     gateway 10.0.0.254     netmask 255.255.255.0 iface wlan0 inet static     address 192.168.0.1     netmask 255.255.255.0     wireless-essid Wifi327     wireless-mode ad-ho0 After rebooting, iwconfig wlan0 reported that the Wi-Fi settings were correct.  However, ifconfig showed no assigned IP address.  If I configured the IP address manually using ifconfig wlan0 192.168.0.1 netmask 255.255.255.0 then everything was fine and I was able to happily ping the IP address of the ELM327.  I tried numerous variations on the interfaces file, but nothing I did would get me an IP address on wlan0 when the machine booted.  Eventually I decided that this was a pointless thing to spend more time on and so I put a script in /etc/init.d and registered it with update-rc.d.  All the script does (currently) is execute the ifconfig line and now, having installed the telnet package I am able to telnet to the ELM327 via the Raspberry Pi.  Not nice, but it works. Here's a picture of the Raspberry Pi in the car for testing In the next part we'll look at running the Java code on the Raspberry Pi to collect data from the car systems.

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  • Meet us at Devoxx!

    - by terrencebarr
    It’s Devoxx time again! If you’re at Devoxx, sure to check the schedule for a whole range of exciting Java and Oracle topics: JavaFX, OpenJDK, JDK 7, Java Embedded, Java EE, JCP, NetBeans, Greenfoot, as well as Java Duchess and JUG meetings. Talks, labs, BOFs, demos, and more. Embedded Java will also play a prominent role. Want to see Java on Raspberry Pi in action? Find out why what’s happening with Java in IoT (Internet of Things)? Play with NetBeans and Tinkerforge? Check out the full Devoxx schedule. Why do I think Java has the most exciting part of its future still ahead of it? Catch up with me at my talk on Wed 14:00:  ”Small, Smart, Connected: Java in the Internet of Things”. Cheers, – Terrence Filed under: Mobile & Embedded Tagged: embedded, Embedded Java, Java, Java Embedded, JavaFX, NetBeans, OpenJDK

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  • Nashorn in the Twitterverse, Continued

    - by jlaskey
    After doing the Twitter example, it seemed reasonable to try graphing the result with JavaFX.  At this time the Nashorn project doesn't have an JavaFX shell, so we have to go through some hoops to create an JavaFX application.  I thought showing you some of those hoops might give you some idea about what you can do mixing Nashorn and Java (we'll add a JavaFX shell to the todo list.) First, let's look at the meat of the application.  Here is the repackaged version of the original twitter example. var twitter4j      = Packages.twitter4j; var TwitterFactory = twitter4j.TwitterFactory; var Query          = twitter4j.Query; function getTrendingData() {     var twitter = new TwitterFactory().instance;     var query   = new Query("nashorn OR nashornjs");     query.since("2012-11-21");     query.count = 100;     var data = {};     do {         var result = twitter.search(query);         var tweets = result.tweets;         for each (tweet in tweets) {             var date = tweet.createdAt;             var key = (1900 + date.year) + "/" +                       (1 + date.month) + "/" +                       date.date;             data[key] = (data[key] || 0) + 1;         }     } while (query = result.nextQuery());     return data; } Instead of just printing out tweets, getTrendingData tallies "tweets per date" during the sample period (since "2012-11-21", the date "New Project: Nashorn" was posted.)   getTrendingData then returns the resulting tally object. Next, use JavaFX BarChart to display that data. var javafx         = Packages.javafx; var Stage          = javafx.stage.Stage var Scene          = javafx.scene.Scene; var Group          = javafx.scene.Group; var Chart          = javafx.scene.chart.Chart; var FXCollections  = javafx.collections.FXCollections; var ObservableList = javafx.collections.ObservableList; var CategoryAxis   = javafx.scene.chart.CategoryAxis; var NumberAxis     = javafx.scene.chart.NumberAxis; var BarChart       = javafx.scene.chart.BarChart; var XYChart        = javafx.scene.chart.XYChart; var Series         = XYChart.Series; var Data           = XYChart.Data; function graph(stage, data) {     var root = new Group();     stage.scene = new Scene(root);     var dates = Object.keys(data);     var xAxis = new CategoryAxis();     xAxis.categories = FXCollections.observableArrayList(dates);     var yAxis = new NumberAxis("Tweets", 0.0, 200.0, 50.0);     var series = FXCollections.observableArrayList();     for (var date in data) {         series.add(new Data(date, data[date]));     }     var tweets = new Series("Tweets", series);     var barChartData = FXCollections.observableArrayList(tweets);     var chart = new BarChart(xAxis, yAxis, barChartData, 25.0);     root.children.add(chart); } I should point out that there is a lot of subtlety going on in the background.  For example; stage.scene = new Scene(root) is equivalent to stage.setScene(new Scene(root)). If Nashorn can't find a property (scene), then it searches (via Dynalink) for the Java Beans equivalent (setScene.)  Also note, that Nashorn is magically handling the generic class FXCollections.  Finally,  with the call to observableArrayList(dates), Nashorn is automatically converting the JavaScript array dates to a Java collection.  It really is hard to identify which objects are JavaScript and which are Java.  Does it really matter? Okay, with the meat out of the way, let's talk about the hoops. When working with JavaFX, you start with a main subclass of javafx.application.Application.  This class handles the initialization of the JavaFX libraries and the event processing.  This is what I used for this example; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import javafx.application.Application; import javafx.stage.Stage; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; public class TrendingMain extends Application { private static final ScriptEngineManager MANAGER = new ScriptEngineManager(); private final ScriptEngine engine = MANAGER.getEngineByName("nashorn"); private Trending trending; public static void main(String[] args) { launch(args); } @Override public void start(Stage stage) throws Exception { trending = (Trending) load("Trending.js"); trending.start(stage); } @Override public void stop() throws Exception { trending.stop(); } private Object load(String script) throws IOException, ScriptException { try (final InputStream is = TrendingMain.class.getResourceAsStream(script)) { return engine.eval(new InputStreamReader(is, "utf-8")); } } } To initialize Nashorn, we use JSR-223's javax.script.  private static final ScriptEngineManager MANAGER = new ScriptEngineManager(); private final ScriptEngine engine = MANAGER.getEngineByName("nashorn"); This code sets up an instance of the Nashorn engine for evaluating scripts. The  load method reads a script into memory and then gets engine to eval that script.  Note, that load also returns the result of the eval. Now for the fun part.  There are several different approaches we could use to communicate between the Java main and the script.  In this example we'll use a Java interface.  The JavaFX main needs to do at least start and stop, so the following will suffice as an interface; public interface Trending {     public void start(Stage stage) throws Exception;     public void stop() throws Exception; } At the end of the example's script we add; (function newTrending() {     return new Packages.Trending() {         start: function(stage) {             var data = getTrendingData();             graph(stage, data);             stage.show();         },         stop: function() {         }     } })(); which instantiates a new subclass instance of Trending and overrides the start and stop methods.  The result of this function call is what is returned to main via the eval. trending = (Trending) load("Trending.js"); To recap, the script Trending.js contains functions getTrendingData, graph and newTrending, plus the call at the end to newTrending.  Back in the Java code, we cast the result of the eval (call to newTrending) to Trending, thus, we end up with an object that we can then use to call back into the script.  trending.start(stage); Voila. ?

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  • javafx doesnt repaint label till method has finished, why?

    - by jeff porter
    Hi all, I have a JavaFX app with a some code like this... public class MainListener extends EventListener{ override public function event (arg0 : String) : Void { statusText.content = arg0; } } statusText is defined like this... var statusText = Text { x: 30 y: stageHeight - 40 font: Font { name: "Bitstream Vera Sans Bold" size: 10 } wrappingWidth: 420 fill: Color.WHITE textAlignment: TextAlignment.CENTER content: "Status: awaiting DBF file." }; I also have some other Javacode that is load data, much like this.. public ArrayList<CustomerRecord> read(EventListener listener) { ArrayList<CustomerRecord> listOfCustomerRecords = new ArrayList<CustomerRecord>(); listener.event("Status: Starting read"); // ** takes a while... List<Map<String, CustomerField>> customerRecords = new Reader(file).readData(listener); // ** long running method over. listener.event("Status: Loaded all customers, count:" + listOfCustomerRecords.size()); return listOfCustomerRecords; } Now while the last method is in its long running call, I would expect to see my statusText updated to have 'Status: Starting read', but its doesn't. Its only when the read() method returns that the text is updated. If its was 'straight' java I would presume that the long running job is hogging the CPU, or the statusText needed to have repaint() called on it. Can anyone give me any ideas? Thanks Jeff Porter

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  • JavaFX 2.0 - How to change legend color of a LineChart dynamically?

    - by marie
    I am trying to style my JavaFX linechart but I have some trouble with the legend. I know how to change the legend color of a line chart in the css file: .default-color0.chart-series-line { -fx-stroke: #FF0000, white; } .default-color1.chart-series-line { -fx-stroke: #00FF00, white; } .default-color2.chart-series-line { -fx-stroke: #0000FF, white; } .default-color0.chart-line-symbol { -fx-background-color: #FF0000, white; } .default-color1.chart-line-symbol { -fx-background-color: #00FF00, white; } .default-color2.chart-line-symbol { -fx-background-color: #0000FF, white; } But this is not enough for my purposes. I have three or more colored toggle buttons and a series of data for every button. The data should be displayed in the same color the button has after I have selected the button. This should be possible with a multiselection of the buttons, so that more than one series of data can be displayed simultaneously. For the chart lines I have managed it by changing the style after I clicked the button: .. dataList.add(series); .. series.getNode().setStyle("-fx-stroke: rgba(" + rgba + ")"); If I deselect the button I remove the data from the list. dataList.remove(series); That is working fine for the strokes, but how can I do the same for the legend? You can see an example below. First I clicked the red button, thus the stroke and the legend is red (default-color0). After that I clicked the blue button. Here you can see the problem. The stroke is blue but the legend is green, because default color1 is used and I do not know how to change the legend color.

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  • What's brewing in the world of Java? (Dec 22nd 2010)

    - by Jacob Lehrbaum
    The nights are getting darker, the email traffic seems to be getting lighter and the holiday season feels like its right around the corner - but the world of Java is still as active as ever and shows no signs of taking a break!  Let's take a look at everything that has been brewing over the past couple of weeks:Product Updates and ResourcesJCP Approves JSRs for Java SE 7, Java SE 8, Project Coin and Lambda (read more)Java SE Update 23 Released, delivers improved performance and enhanced support for right-left languages. (read more or download)New Tutorial: JDK 7 Support in NetBeans IDE 7.0Java EE 6 and Glassfish 3.0 have celebrated their respective one year anniversaries!  (read more) So naturally, it's time to start talking about Java EE 7 (read more)WebcastsOn Demand: Developing Rich Clients for the Enterprise with the JavaFX Composer, Part 1Coming soon: Smarter Devices with Oracle's Embedded Java SolutionsPodcastsJava Spotlight Podcast Episode 7: Interview with Adam Messinger, Vice President of Java Development on Java One Brazil, Java SE Development, OpenJDK, JavaFX 2.0 and more!  The NetBeans team released Episode 53 of the NetBeans Podcast series on December 3rd marking the first episode in nearly 12 months.  Sign of things to come?Community and EventsJavaOne was held for the first time in Brazil this year, and by all accounts it was a great success!  Read more about this exciting first in the following posts from Tori Wieldt (JavaOne Latin America Underway) and Janice Heiss (JavaOne in Brazil)JavaOne was also held in Bejing for the first time last week and was also a huge success. Will try to include coverage of this event in the near futureArticles and InterviewsAn update on JavaServer Faces with Oracle's Ed Burns (read more)Interview with Java Champion Matjaz B. Juric on Cloud Computing, SOA, and Java EE 6 (read more)The 2010 JavaOne Java EE 6 Panel: Where We Are and Where We're Going (read more)Oracle MagazineThe latest issue of Oracle Magazine is up and in what will hopefully be a sign of the future, it includes a number of columns and articles on Java.  First is an editorial from Editor-in-Chief Tom Haunert who shares some insight into the long-standing relationship that Oracle has had with Java. Next up is a Oracle Technology Network Chief Justin Kestelyn's Community Bulletin entitled: Java Evolves.  And finally, Java Champion Adam Bien's feature on Java EE 6: Simplicity by DesignEnjoy!

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  • Creating a desktop icon using JWS JNLP for a JavaFX app.

    - by Sleepycat
    I am trying to get a custom destop icon to be displayed for my app but for some reason no matter what I do the same default java icon shows up. I have tried everything I can think of and gone and compared my jnlp file with others whose icons seem to work ok. According to everything I have read the following should work fine. But of course, it doesn't: <information> <title>MikesApp</title> <vendor>Mike</vendor> <homepage href="http://www.mikesapp.com/"/> <description>Mikes App.</description> <icon kind="shortcut" href="res/icon64x64.png" width="64" height="64"/> <offline-allowed/> <shortcut> <desktop/> </shortcut> </information> Any ideas would be greatly appreciated.

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  • Is there any way to sync the scrollbars in a JavaFX 1.2 ListView?

    - by Xystus7777
    I have multiple listviews sidebyside. I have a way to make sure the "selectedIndex" is the same on all of them, but is there a way to make it so the scrollbar's are ALWAYS synchronized? It seems that the scrollbars WILL be synced as long as the user uses the ARROW KEYS when navigating down the listview, however, if the user HOLDS DOWN the key, OR USES THE MOUSE WHEEL, they will not be synchronized at all. Thanks in advance! Andrew Davis NASA - Kennedy Space Center

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  • iPack -The iOS Application Packager

    - by user13277780
    iOS applications are distributed in .ipa archive files. These files are regular zip files which contain application resources and executable-s. To protect them from unauthorized modifications and to provide identification of their sources, the content of the archives is signed. The signature is included in the application executable of an.ipa archive and protects the executable file itself and the associated resource files. Apple provides native Mac OS tools for signing iOS executable-s (which are actually generic Mach-O code signing tools), but these tools are not generally available on other platforms. To provide a multi-platform development environment for JavaFX based iOS applications, we ported iOS signing and packaging to Java and created a dedicated ipack tool for it. The iPack tool can be used as a last step of creating .ipa package on various operating systems. Prototype has been tested by creating a final distributable for JavaFX application that runs on iPad, all done on Windows 7. Source Code The source code of iPac tool is in OpenJFX project repository. You can find it in: <openjfx root>/rt/tools/ios/Maven/ipack To build the iPack tool use: rt/tools/ios/Maven/ipack$ mvn package After building, you can run the tool: java -jar <path to ipack.jar> <arguments>  Signing keystore The tool uses a java key store to read the signing certificate and the associated private key. To prepare such keystore users can use keytool from JDK. One possible scenario is to import an existing private key and the certificate from a key store used on Mac OS: To list the content of an existing key store and identify the source alias: keytool -list -keystore <src keystore>.p12 -storetype pkcs12 -storepass <src keystore password> To create Java key store and import the private key with its certificate to the keys store: keytool -importkeystore \ -destkeystore <dst keystore> -deststorepass <dst keystore password> \ -srckeystore <src keystore>.p12 -srcstorepass <src keystore password> -srcstoretype pkcs12 \ -srcalias <src alias> -destalias <dst alias> -destkeypass <dst key password> Another scenario would be to generate a private / public key pair directly in a Java key store and create a certificate request from it. After sending the request to Apple one can then import the certificate response back to the Java key store and complete the signing certificate entry. In both scenarios the resulting alias in the Java key store will contain only a single (leaf) certificate. This can be verified with the following command: keytool -list -v -keystore <ipack keystore> -storepass <keystore password> When looking at the Certificate chain length entry, the number next to it is 1. When an executable file is signed on Mac OS, the resulting signature (in CMS format) includes the whole certificate chain up to the Apple Root CA. The ipack tool includes only the chain which is stored under the alias specified on the command line. So to have the whole chain in the signature we need to replace the single certificate entry under the alias with the corresponding full certificate chain. To do that we need first to create the chain in a separate file. It is easy to create such chain when working with certificates in Base-64 encoded PEM format. A certificate chain can be created by concatenating PEM certificates, which should form the chain, into a single file. For iOS signing we need the following certificates in our chain: Apple Root CA Apple Worldwide Developer Relations CA Our signing leaf certificate To convert a certificate from the binary DER format (.der, .cer) to PEM format: keytool -importcert -noprompt -keystore temp.ks -storepass temppwd -alias tempcert -file <certificate>.cer keytool -exportcert -keystore temp.ks -storepass temppwd -alias tempcert -rfc -file <certificate>.pem To export the signing certificate into PEM format: keytool -exportcert -keystore <ipack keystore> -storepass <keystore password> -alias <signing alias> -rfc -file SigningCert.pem After constructing a chain from AppleIncRootCertificate.pem, AppleWWDRCA.pem andSigningCert.pem, it can be imported back into the keystore with: keytool -importcert -noprompt -keystore <ipack keystore> -storepass <keystore password> -alias <signing alias> -keypass <key password> -file SigningCertChain.pem To summarize, the following example shows the full certificate chain replacement process: keytool -importcert -noprompt -keystore temp.ks -storepass temppwd -alias tempcert1 -file AppleIncRootCertificate.cer keytool -exportcert -keystore temp.ks -storepass temppwd -alias tempcert1 -rfc -file AppleIncRootCertificate.pem keytool -importcert -noprompt -keystore temp.ks -storepass temppwd -alias tempcert2 -file AppleWWDRCA.cer keytool -exportcert -keystore temp.ks -storepass temppwd -alias tempcert2 -rfc -file AppleWWDRCA.pem keytool -exportcert -keystore ipack.ks -storepass keystorepwd -alias mycert -rfc -file SigningCert.pem cat SigningCert.pem AppleWWDRCA.pem AppleIncRootCertificate.pem >SigningCertChain.pem keytool -importcert -noprompt -keystore ipack.ks -storepass keystorepwd -alias mycert -keypass keypwd -file SigningCertChain.pem keytool -list -v -keystore ipack.ks -storepass keystorepwd Usage When the ipack tool is started with no arguments it prints the following usage information: -appname MyApplication -appid com.myorg.MyApplication     Usage: ipack <archive> <signing opts> <application opts> [ <application opts> ... ] Signing options: -keystore <keystore> keystore to use for signing -storepass <password> keystore password -alias <alias> alias for the signing certificate chain and the associated private key -keypass <password> password for the private key Application options: -basedir <directory> base directory from which to derive relative paths -appdir <directory> directory with the application executable and resources -appname <file> name of the application executable -appid <id> application identifier Example: ipack MyApplication.ipa -keystore ipack.ks -storepass keystorepwd -alias mycert -keypass keypwd -basedir mysources/MyApplication/dist -appdir Payload/MyApplication.app -appname MyApplication -appid com.myorg.MyApplication    

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  • JavaFx a-t-il encore une chance de s'imposer face à Flash, Silverlight et l'émergence du HTML 5 ? Ou

    JavaFx a-t-il encore une chance de s'imposer Face à Flash, Silverlight et l'émergence du HTML 5 ? JavaFx a été lancé il y a trois ans pour développer des applications lourdes. Très vite, les développeurs l'ont utilisé pour des applications multimédias et pour faire du web java (notamment des Rich Internet Applications ou RIA). La plateforme - qui se compose du langage de script JavaFX, une plateforme pour client lourd et une intégration avec la machine virtuelle Java - entendait ainsi répondre ainsi aux besoins d'un marché où la compétition fait désormais rage avec, entre autres, des acteurs aussi importants que Flash de Adobe et Silverlight de Microsoft. Selon la

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  • How to minimize the usage of static variables and objects

    - by Peter Penzov
    I'm trying to implement this JavaFX code where I want to call remote Java class and pass boolean flag: final CheckMenuItem toolbarSubMenuNavigation = new CheckMenuItem("Navigation"); toolbarSubMenuNavigation.setOnAction(new EventHandler<ActionEvent>() { @Override public void handle(ActionEvent e) { //DataTabs.renderTab = toolbarSubMenuNavigation.isSelected(); DataTabs.setRenderTab(toolbarSubMenuNavigation.isSelected()); // call here the getter setter and send boolean flag System.out.println("subsystem1 #1 Enabled!"); } }); Java class which I want to call: public class DataTabs { private static boolean renderTab; // make members *private* private static TabPane tabPane; public static boolean isRenderTab() { return DataTabs.renderTab; } public static void setRenderTab(boolean renderTab) { DataTabs.renderTab = renderTab; tabPane.setVisible(renderTab); } // somewhere below // set visible the tab pane TabPane tabPane = DataTabs.tabPane = new TabPane(); tabPane.setVisible(renderTab); } This implementation works but I want to optimize it to use less static variables and objects. Can you tell me which sections of the code how can be optimized?

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  • Adobe Flex + Air or Java + JavaFX 2.0?

    - by kuyapangu
    Hey guys! I'm looking into a cloud-computing related career. I've recently graduated from school and have been meaning to study a new programming language. From what I understand, I need to get into RIA development for this. Flex and Java have certainly caught my attention, but I am torn as to whether focus on Flex then continue with Air, or study Java first and see how JavaFX 2.0 pans out, and then continue with Flex thereafter. I've no previous experience with either, and I'm sort of giving myself something like two years or so to learn. What do guys think? Thanks for the feedback! :)

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  • Java Developer Workshop #2 ??!(12/1)

    - by ksky
    12/1??????????????Java?????????????????????????????(?2?:?1????????)??????!?????????????JavaFX/SE/EE/ME???????????????????????"Polyglot Programming on Java VM"??????Scala?JRuby?Groovy????Java VM??????????????????????????????????????????????????????? ???????Client Java Group?Vice President???JavaFX???????????Nandini Ramani???????????????JavaFX 2.0??????????????????????????Nandini?JavaOne???????????????????????????JavaOne??iPad?Windows?Linux?????????JavaFX???????????????????????? ???????????????????????????JavaOne??????????????Java EE/SE/ME???????????????????????????????????SE 8???????????EE????SE?FX???????ME??????????????????? ???Java VM????!???Scala?????????Scala??????????????????????????Scala????????????????????JRuby????????JRuby/CRuby???????????????????JRuby????????????????????????Groovy????????????????GROOVY???????????????Groovy????Java???????????????????? ???????????Java SE 7?JavaFX 2.0?????????????????Java VM?????????????????????????????! ???????????????????????????????????????????????????????????????????!????????????????????ustream?????????????

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  • MVC: How to Implement Linked Views?

    - by cw'
    I'm developing a java application to visualize time series. I need (at least) three linked views, meaning that interaction with one of them updates the others. The views are: A list represents the available and currently selected time series. The selected time series are used as input for subsequent computations. Changing the selection should update the other views. A line chart displays the available and selected time series. Time series should be selectable from here by clicking on them. A bar chart shows aggregated data on time series. When zooming in to a period of time, the line chart should zoom in to the same period (and vice versa). How to implement this nicely, from a software engineering point of view? I.e. I'd like to write reusable and clear, maintainable code. So I thought of the MVC pattern. At first I liked the idea of having the three view components observing my model class and to refresh views upon being notified. But then, it didn't feel right to store view related data in the model. Storing e.g. the time series selection or plot zoom level in the model makes implications about the view which I wouldn't want in a reusable model. On the other hand, having the controllers observe each other results in a lot of dependencies. When adding another view, I'd have to register all other views as observer of the new view and vice versa, passing around many references and introducing dependencies. Maybe another "model" storing only view-related data would be the solution?

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  • JavaFX2: Drag Event start and end coordinates

    - by user
    I have one node(ImageView) that displays an image and another node(rectangle) that resides on top of it. The behavior I need is that when the mouse is dragged(press-drag-release gesture) over the rectangle, both the nodes should move coherently. My thought process goes in the following direction: • Move both the nodes by the same distance in the direction of the drag. For this option(maybe there are more options) I need the distance between the start and end of the mouse drags. I tried capturing the start and end coordinates of the drag but have been unsuccessful. I think I am getting lost in which handlers to implement. The code I have is below: import javafx.event.EventHandler; import javafx.geometry.Rectangle2D; import javafx.scene.image.ImageView; import javafx.scene.input.MouseEvent; public class MyView { double mouseDragStartX; double mouseDragEndX; double mouseDragStartY; double mouseDragEndY; ImageView imageView; public MyView() { imageView = new ImageView("C:\\temp\\test.png"); } private void setRectangleEvents(final MyObject myObject) { myObject.getRectangle().setOnMousePressed(new EventHandler<MouseEvent>() { @Override public void handle(MouseEvent mouseEvent) { mouseDragStartX = mouseEvent.getX(); mouseDragStartY = mouseEvent.getY(); mouseEvent.consume(); } }); myObject.getRectangle().setOnMouseReleased(new EventHandler<MouseEvent>() { public void handle(MouseEvent mouseEvent) { mouseDragEndX = mouseEvent.getX(); mouseDragEndY = mouseEvent.getY(); myObjectDraggedHandler(); } }); } private void myObjectDraggedHandler() { Rectangle2D viewport = this.imageView.getViewport(); double newX = this.imageView.getImage().getWidth() + (mouseDragEndX - mouseDragStartX); double newY = this.imageView.getImage().getHeight() + (mouseDragEndY - mouseDragStartY); this.imageView.setViewport(new Rectangle2D(newX, newY, viewport.getWidth(), viewport .getHeight())); } } P.S: This code is just for indicating what I am trying to implement and will not compile correctly. Or maybe my question should just have been: How to capture the length or span of a mouse drag?

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  • ????! ?????????????????????????????????JavaOne 2012????? ????×????

    - by ???02
    2012?9?30???10?4??4?????????????????????Java??????????????JavaOne 2012??????????????????????2???????????????Make the Future Java????????Java?????????????????????Java??????????????????????????????????????Java??????????????(Fusion Middleware??????)?????JavaOne 2012??????????(???=????[??????IT????]) Make the Future Java?????????????????????????????????? --???JavaOne????????Make the Future Java?????????????????????????... ??:?Java????????????????Java???????????????????????????????????????????????????????????????????????????Java???????????????????????????????????????????????????????????????????????????????????????????????? ?????? Fusion Middleware?????? ???Java?????????????? --???JavaOne????????3????????????????????????????????????? ??:???Java SE?Java EE?Java ME???3?????????????(???)?????????????????????1??????????????????????????????????????????????????????????????????????????????????????????? --????????????????????????????????????????????????????????????????Java EE 7????????????????????????????????? ??:???????????????????????????????????????????????Java????????????????????????????????????????????????????????????????????????? ????????????? ???????????? ????????? ?????????????? ??????????????? ?????????? ???????????????????????????????????????? ?????????/?????????·?????HTML5?????????????????????????????????????????Java??????????? ????????????????????Java?????????????????????????????????JCP(Java Community Process)??????????????????·??????????????????????????????????????·?????????????????????????????????????????????????????????·???????????????????????????Java????????????????????????????????????????????????????? JavaFX?Java???UI????Java SE 8??? JavaOne 2012??????????????IT?????????? --2013???????????????Java SE 8??????2?????????Java SE 9???????????????????????????????????????????JavaScript?????????Java SE 8???????????????????Jigsaw??Java SE 9???????????????????Java SE 8????????????JavaScript?????Nashorn(?????)???????Rhino(????)??????????????????????????????????????????? ??:JavaScript????????JVM?????????????????? ???Web?????????JavaScript?????????????????? ????????????Java???JavaScript??????????????Java SE 7??????InvokeDynamic????????????????????Nashorn??????????????????????????????JVM????????????????????????????????????????????????????????????????????????????????JVM??JavaScript??????????JavaScript???????????????????????????JavaOne?Nashorn????????????????????????????????????????????????????????????????? --Java SE 8??JavaFX 3.0????????????????????? ??:JavaFX??????Java???????????????????Java SE 8??????????????????Java????UI?????AWT?????????Swing??????HTML5????????????Web???????????????????????JavaFX????????????GUI??????????????????????? --???JavaFX?????????????????????????????????????????????????????? ??:????????????????????JavaFX????????????????JavaFX????????·????GUI????????????????????????Visual Basic??????????????????Swing???????????????????????GUI????????? --??????????????????????JavaFX for ARM?????????????? ??:??????ARM????????????????·??????????????????????JavaFX?????????1????????????????????????????JavaFX Scene Builder?Linux??JavaFX SceneBuilder for Linux???????????????????????????????????????????????? Java EE 7??????????????????????Java EE 8?????????????? --Java EE 7?????????????????JavaOne????????????????????????????????????2013?????????????????????????????????????? ??:??????????????Java EE 8????????????????????????????????????????·????????????????????????????? ???????????????????Java???????????????????????????????????????????????????????????????????????????????????????????????????·???????????????????????????????????????????????????????????????????????????????????????????????????????????2013???????????????????????? --????????????????????????????????????????????????????????????? ??:???????????????????????????Java EE 7??HTML5????????????????????????????????????????????JMS(Java Message Service)??????·????1??????????????????????Java EE 7???Java EE 6???????????????????????????CDI(Context Dependency Injection)???????????????????????? ??????Java EE 7????????????????????????Java EE 8??????????????????????????????????????? “Java??”??????·????????? --????????JavaOne??????????????????????? ??:????????????????NetBeans??????????????Project Easel??AMD?OpenJDK??????????????Project Sumatra????????? Easel?NetBeans 7.3????????????HTML5?CSS3?JavaScript?????????????????????????????????????????????????JavaScript?????????????????????? ???Sumatra?Java??GPU?GPU/CPU?????????????????????????????GPU??HotSpot???JVM????????????????????????????/?????????Java?????????????????????????????? --????·???????????Java EE???????JavaScript??????????????????????Project Avatar????????????????? ??:JavaScript?????????????????????????????Avatar????????????????????????????????????????2???????????????????????????????????????????????????Web???????????????????Avatar?????????????????????? --???Java EE??????????????????? ??:???????????????????JavaScript??Java EE?????????????Java????????JavaScript?????????????????????JVM????????????????????????????????????JavaScript????????Java?????????????????????????????????????????????Avatar????JavaScript?????????????????????????????·??????????????????????????????? --?JavaScript?????Nashorn???????????????????JavaScript?????????????????????????????????Avatar???????·???JavaScript????????????????????????“????·??????”????????????????(?) ??:Nahorn?Node.js??????????Java???????????JavaScript??????????????????????????????Java?JavaScript??????????????????????? --????????????????????????????????????????????????? ??:????????????????????????????????????????????????????·???????????????·????????????????????????????T???????????????????????????????????... ???????????! --?????????????·?????????????????????????! JavaOne????????????????????????????????“T?????”?????????????????????????????????????????????T???????????????(?) ??:???Liquid Robotics?????????????????/????????????????????Java?????????????????????????????Java???????????????????????????????JavaOne?????????

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  • How to write to an XML file inside a jar file?

    - by cancelledout
    Hi Java programmers. I badly need your help. I have a JavaFX/Java ME application. I'm trying to modify an XML file inside my project's folder (soon to be packaged jar file). The path of the file I want to write: /parseExample/service1.xml Sadly, my application is a JavaFx/JavaME so it doesn't contain the library java.util.jar. So I can't use the jar classes. Are there other ways to do that?

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  • How to maintain GridPane's fixed-size after adding elemnts dynamically

    - by Eviatar G.
    I need to create board game that can be dynamically change. Its size can be 5x5, 6x6, 7x7 or 8x8. I am jusing JavaFX with NetBeans and Scene builder for the GUI. When the user choose board size greater than 5x5 this is what happens: This is the template on the scene builder before adding cells dynamically: To every cell in the GridPane I am adding StackPane + label of the cell number: @FXML GridPane boardGame; public void CreateBoard() { int boardSize = m_Engine.GetBoard().GetBoardSize(); int num = boardSize * boardSize; int maxColumns = m_Engine.GetNumOfCols(); int maxRows = m_Engine.GetNumOfRows(); for(int row = 0; row < maxRows ; row++) { for(int col = maxColumns - 1; col >= 0 ; col--) { StackPane stackPane = new StackPane(); stackPane.setPrefSize(150.0, 200.0); stackPane.getChildren().add(new Label(String.valueOf(num))); boardGame.add(stackPane, col, row); num--; } } boardGame.setGridLinesVisible(true); boardGame.autosize(); } The problem is the stack panes's size on the GridPane are getting smaller. I tried to set them equal minimum and maximum size but it didn't help they are still getting smaller. I searched on the web but didn't realy find same problem as mine. The only similar problem to mine was found here: Dynamically add elements to a fixed-size GridPane in JavaFX But his suggestion is to use TilePane and I need to use GridPane because this is a board game and it more easier to use GridPane when I need to do tasks such as getting to cell on row = 1 and column = 2 for example. EDIT: I removed the GridPane from the FXML and created it manually on the Controller but now it print a blank board: @FXML GridPane boardGame; public void CreateBoard() { int boardSize = m_Engine.GetBoard().GetBoardSize(); int num = boardSize * boardSize; int maxColumns = m_Engine.GetNumOfCols(); int maxRows = m_Engine.GetNumOfRows(); boardGame = new GridPane(); boardGame.setAlignment(Pos.CENTER); Collection<StackPane> stackPanes = new ArrayList<StackPane>(); for(int row = 0; row < maxRows ; row++) { for(int col = maxColumns - 1; col >= 0 ; col--) { StackPane stackPane = new StackPane(); stackPane.setPrefSize(150.0, 200.0); stackPane.getChildren().add(new Label(String.valueOf(num))); boardGame.add(stackPane, col, row); stackPanes.add(stackPane); num--; } } this.buildGridPane(boardSize); boardGame.setGridLinesVisible(true); boardGame.autosize(); boardGamePane.getChildren().addAll(stackPanes); } public void buildGridPane(int i_NumOfRowsAndColumns) { RowConstraints rowConstraint; ColumnConstraints columnConstraint; for(int index = 0 ; index < i_NumOfRowsAndColumns; index++) { rowConstraint = new RowConstraints(3, Control.USE_COMPUTED_SIZE, Double.POSITIVE_INFINITY, Priority.ALWAYS, VPos.CENTER, true); boardGame.getRowConstraints().add(rowConstraint); columnConstraint = new ColumnConstraints(3, Control.USE_COMPUTED_SIZE, Double.POSITIVE_INFINITY, Priority.ALWAYS, HPos.CENTER, true); boardGame.getColumnConstraints().add(columnConstraint); } }

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  • JavaOne 2012 : Oracle dévoile ses plans pour Java, les préversions du JDK 8 et JavaFX Scene Builder 1.1 disponibles

    JavaOne 2012 : Oracle renouvelle son engagement à faire évoluer Java et dévoile ses plans les préversions de JDK 8 et JavaFX Scene Builder 1.1 disponibles JavaOne 2012, la plus grande conférence annuelle autour de la plateforme Java se déroule actuellement à San Francisco. Oracle a profité de l'occasion pour dévoiler sa feuille de route pour Java et renouveler son engagement à faire évoluer le langage afin de rassurer les utilisateurs sceptiques face aux récentes découvertes de failles dans la plateforme. Pendant ces prochains mois, Oracle travaillera essentiellement sur Java SE 8. Au menu : l'éditeur prévoit l'intégration des expressions lambda, du moteur JavaScript Nash...

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