Question

How do you convert Jpanel to a regular JavaFX program?

Answer 1

SwingNode. Yes, SwingNode class present in javafx.embed.swing.SwingNode is used to embed a Swing content into a JavaFX application. As JPanel is a component of Java Swing. So to use Swing components in JavaFX we have SwingNode class in javafx.

Below JavaFX example program is showing how to use JPanel in JavaFX.

import javax.swing.JLabel;
import javax.swing.JPanel;

import javafx.application.Application;
import javafx.embed.swing.SwingNode;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

public class JavaFXAndSwingNodeExample extends Application{

   public void start(Stage stage) throws Exception{
       try{
           final SwingNode swingNode = new SwingNode();
     
           addJPanelToSwingNode(swingNode);

   Pane pane = new Pane();
   pane.getChildren().add(swingNode);

   stage.setScene(new Scene(pane, 100, 50));
   stage.setMaximized(true);
   stage.show();
       }
       catch (Exception e){
           throw e;
       }
   }

   private void addJPanelToSwingNode(SwingNode swingNode) {
       JPanel panel = new JPanel();
       JLabel jLabel = new JLabel("Exaple to use Jpanel in JavaFX");
       panel.add(jLabel);
swingNode.setContent(panel);      
   }

   public static void main(String[] args){
       try{
           launch(args);
       }
       catch (Exception e){
           e.printStackTrace();
       }
   }
}

Screenshot of above program:-

Output of above program:-