JavaFX on Ubuntu 24.04 — Bootstrap 5 Auto-Open Modal

Install the Ubuntu packaged JavaFX:

sudo apt update
sudo apt install openjfx

Verify:

dpkg -l | grep openjfx

Screenshot Example

Gluon HQ JavaFX

Package Verification

NetBeans JavaFX Setup

Download and install a JavaFX SDK under /opt/javafx:

wget https://download2.gluonhq.com/openjfx/21/openjfx-21_linux-x64_bin-sdk.zip
unzip openjfx-21_linux-x64_bin-sdk.zip
sudo mv javafx-sdk-21 /opt/javafx

Run an app with module-path:

java --module-path /opt/javafx/lib --add-modules javafx.controls,javafx.fxml -jar yourapp.jar

SDK Download

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/opt/javafx Layout

JavaFX SDK folder layout under /opt (example image)

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Install Scene Builder via Snap:

sudo snap install scenebuilder --classic
scenebuilder

Scene Builder UI

JavaFX Scene Builder

FXML Workflow

JavaFX UI Controls

Install IntelliJ Community (Snap):

sudo snap install intellij-idea-community --classic

IntelliJ JavaFX Wizard

Opening Scene Builder from NetBeans

Run Config

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Create a minimal JavaFX app:

cat << 'EOF' > HelloFX.java
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.stage.Stage;

public class HelloFX extends Application {
    public void start(Stage stage) {
        stage.setScene(new Scene(new Label("JavaFX works!"), 300, 200));
        stage.show();
    }
}
EOF

Compile and run (manual SDK under /opt/javafx):

javac --module-path /opt/javafx/lib --add-modules javafx.controls HelloFX.java
java  --module-path /opt/javafx/lib --add-modules javafx.controls HelloFX

Compile Output

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HelloFX Window