Threading Rules for JavaFX There are two basic rules for threads and JavaFX: Any code that modifies or accesses the state of a node that is part of a scene graph must be executed on the JavaFX application thread. Certain other operations (e.g. creating new Stages) are also bound by this rule. Any code that … Read more
As mentioned in the comments, the Starting Guide is the place to start with Java 11 and JavaFX 11. The key to work as you did before Java 11 is to understand that: JavaFX 11 is not part of the JDK anymore You can get it in different flavors, either as an SDK or as … Read more
UPDATE 10/2021 Since JavaFX 16 a warning is displayed when JavaFX doesn’t run on the module path, which is the case of an uber/fat jar: $ java -jar myFatJar-1.0-SNAPSHOT.jar Oct 02, 2021 1:45:21 PM com.sun.javafx.application.PlatformImpl startup WARNING: Unsupported JavaFX configuration: classes were loaded from ‘unnamed module @14c24f4c’ Also, you get a warning from the shade … Read more
This question is really a duplicate of: Javafx PropertyValueFactory not populating Tableview, but I’ll specifically address your specific case, so it’s clear. Suggested solution (use a Lambda, not a PropertyValueFactory) Instead of: aColumn.setCellValueFactory(new PropertyValueFactory<Appointment,LocalDate>(“date”)); Write: aColumn.setCellValueFactory(cellData -> cellData.getValue().dateProperty()); For more information, see this answer: Java: setCellValuefactory; Lambda vs. PropertyValueFactory; advantages/disadvantages How do you use a … Read more
There are many different variations of this pattern. In particular, “MVC” in the context of a web application is interpreted somewhat differently to “MVC” in the context of a thick client (e.g. desktop) application (because a web application has to sit atop the request-response cycle). This is just one approach to implementing MVC in the … Read more
You can use Timeline for that task: Timeline fiveSecondsWonder = new Timeline( new KeyFrame(Duration.seconds(5), new EventHandler<ActionEvent>() { @Override public void handle(ActionEvent event) { System.out.println(“this is called every 5 seconds on UI thread”); } })); fiveSecondsWonder.setCycleCount(Timeline.INDEFINITE); fiveSecondsWonder.play(); for the background processes (which don’t do anything to the UI) you can use old good java.util.Timer: new Timer().schedule( … Read more
Short version of answer: Use getClass().getResource(…) or SomeOtherClass.class.getResource(…) to create a URL to the resource Pass either an absolute path (with a leading /) or a relative path (without a leading /) to the getResource(…) method. The path is the package containing the resource, with . replaced with /. Do not use .. in the … Read more
Using MVC Most of this answer focuses on a direct call to pass a parameter from a calling class to the controller. If instead, you want to decouple the caller and controller and use a more general architecture involving a model class with settable and listenable properties to achieve inter-controller communication, see the following basic … Read more
To increase no. of blades dynamically, you need to change no. of arcs you are making, its length and angle difference. Change your constructor of FanPane according to below code. public FanPane(int blade) { circle.setStroke(Color.BLUE); circle.setFill(Color.WHITE); circle.setStrokeWidth(4); getChildren().add(bpane); slider1.setShowTickLabels(true); slider1.setShowTickMarks(true); slider1.setMajorTickUnit(5); slider1.setMinorTickCount(0); slider1.setBlockIncrement(1); slider2.setShowTickLabels(true); slider2.setShowTickMarks(true); slider2.setMajorTickUnit(5); slider2.setMinorTickCount(0); slider2.setBlockIncrement(1); gpane.setConstraints(speed, 0, 0); gpane.setConstraints(slider1, 1, 0); gpane.setConstraints(numBlades, … Read more
Change the code from })} // this line I get the error to this }}); You need 2 consecutive closing braces: the first to finish the handle method, the 2nd to finish the EventHandler the outer close parentheses is to finish the setOnAction call. And finally a semi colon to complete the statement.