JavaFX Application Icon

Question

Is it possible to change the application icon using JavaFX, or does it have to be done using Swing?

Answer 1

Toggle icons in runtime:

In addition to the responses here, I found that once you have assigned an Icon to your application by the first time you cannot toggle it by just adding a new icon to your stage (this would be helpful if you need to toggle the icon of your app from on/off enabled/disabled).

To set a new icon during run time use the getIcons().remove(0) before trying to add a new icon, where 0 is the index of the icon you want to override like is shown here:

//Setting icon by first time (You can do this on your start method).
stage.getIcons().add(new Image(getClass().getResourceAsStream("enabled.png")));

//Overriding app icon with a new status (This can be in another method)
stage.getIcons().remove(0);
stage.getIcons().add(new Image(getClass().getResourceAsStream("disabled.png")));

To access the stage from other methods or classes you can create a new static field for stage in you main class so can access it from out of the start() method by encapsulating in on a static method that you can access from anywhere in your app.

public class MainApp extends Application {
    private static Stage stage;
    public static Stage getStage() { return stage; }

    @Override public void start(Stage primaryStage) {
        stage = primaryStage
        stage.getIcons().add(new Image(getClass().getResourceAsStream("enabled.png")));
    }
}

public class AnotherClass {
    public void setStageTitle(String newTitle) {
        MainApp.getStage().setTitle(newTitle);
        MainApp.getStage().getIcons().remove(0);
        MainApp.getStage().getIcons().add(new Image(getClass().getResourceAsStream("disabled.png")));
    }
}

Answer 2

I tried this and it works:

stage.getIcons().add(new Image(getClass().getResourceAsStream("../images/icon.png")));

Answer 3

stage.getIcons().add(new Image(<yourclassname>.class.getResourceAsStream("/icon.png")));

If your icon.png is in resources dir and remember to put a '/' before otherwise it will not work

Answer 4

Another easy way to insert your own icon on the title bar in JavaFX is to add the image to your primary stage using the following method:

Image ico = new Image("resources/images/iconLogo.png");
stage.getIcons().add(ico);

Make sure your import javafx.scene.image.Image (if using an ide like netbeans this should be automatically done for you).

Answer 5

I tried this and it totally works. The code is:

stage.getIcons().add(
   new Image(
      <yourclassname>.class.getResourceAsStream( "icon.png" ))); 

icon.png is under the same folder as the source files.