How to set application installer icon in JavaFX?

To set the application installer icon for a JavaFX application, you need to specify the icon that will be displayed in the installer and in the application's shortcuts. This is typically done using platform-specific packaging tools or installers. Here's how you can achieve this using different packaging tools:

1. Using JavaFX Packager (Deprecated):
   The JavaFX Packager was deprecated in Java 8 and removed in Java 11. If you're using JavaFX Packager in an older version of Java, you can specify the application icon using the setIcon method in your Main class:

   javaCopy code
   import javafx.application.Application;
   
   import javafx.scene.Scene;
   
   import javafx.scene.image.Image;
   
   import javafx.scene.layout.StackPane;
   
   import javafx.stage.Stage;
   
   
   
   public class Main extends Application {
   
       @Override
   
       public void start(Stage primaryStage) {
   
           StackPane root = new StackPane();
   
           Scene scene = new Scene(root, 300, 250);
   
           primaryStage.setScene(scene);
   
   
   
           // Set the application icon
   
           primaryStage.getIcons().add(new Image("path-to-icon.png"));
   
   
   
           primaryStage.show();
   
       }
   
   
   
       public static void main(String[] args) {
   
           launch(args);
   
       }
   
   }
   
   

   Replace "path-to-icon.png" with the actual path to your icon image file.

2. Using Third-Party Packaging Tools:
   For modern JavaFX applications, it's recommended to use third-party packaging tools like jpackage (introduced in Java 14) or tools like Inno Setup for Windows, DMGTool for macOS, etc. These tools allow you to bundle your Java application with the required runtime and specify the installer icon.

   For example, when using jpackage, you can specify the icon using the --icon option:

   bashCopy code
   jpackage --input target --main-jar YourApp.jar --icon path-to-icon.ico
   
   

   Replace target, YourApp.jar, and path-to-icon.ico with the appropriate paths and names.

3. Using Gradle and JavaFX Gradle Plugin:
   If you're using Gradle and the JavaFX Gradle Plugin, you can specify the icon for the installer in your build script:

   gradleCopy code
   jfx {
   
       // Other configuration options
   
       nativeBundles {
   
           installer {
   
               // Set the installer icon
   
               icon = file('path-to-icon.ico')
   
           }
   
       }
   
   }
   
   

   Replace path-to-icon.ico with the actual path to your icon file.

Remember that the specifics of setting the installer icon might vary depending on the tools and libraries you're using, as well as the target platform. Always refer to the documentation of the packaging tools or libraries you're using for the most accurate and up-to-date information.