[JavaFX][Recolved] Remove button (element) from StackPane

Use :

root.getChildren().remove(btn);

root => Type is StackPane
btn => your button name

Example:

package fxtext;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
/**
 * @author terrapinssky
 */
public class FxText extends Application {
 
    @Override
    public void start(Stage primaryStage) {
        StackPane root = new StackPane();
     
        Button btn = new Button("Button");
        root.getChildren().add(btn);
        btn.setOnAction(new EventHandler<ActionEvent>() {
            @Override public void handle(ActionEvent e) {
                root.getChildren().remove(btn);
            }
        });      
     
        Scene scene = new Scene(root, 300, 250);
     
        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
 
}

Reference:
https://community.oracle.com/thread/2369785?start=0&tstart=0