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import javafx.application.Application;
import javafx.application.Platform;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ListCell;
import javafx.scene.control.ListView;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
import javafx.scene.shape.Rectangle;

import com.sun.glass.events.MouseEvent;
import com.sun.glass.ui.Robot;

public class ChangeScene extends Application {

    public static void main(String[] args) {
        launch(args);
    }
    
    //@Override
    public void start(final Stage primaryStage) {

        Button btn1 = new Button("First Scene");
        btn1.setOnAction(new EventHandler<ActionEvent>() {
            @Override public void handle(ActionEvent e) {
                System.out.println("This is first scene");
            }
        });
        Rectangle rec1 = new Rectangle(400,400);
        rec1.setFill(Color.LIGHTPINK);
        Group root1 = new Group();
        root1.getChildren().addAll(rec1,btn1);
        Scene s1 = new Scene(root1, 400, 400);
        primaryStage.setScene(s1);
        primaryStage.show();
        
        Button btn2 = new Button("Second Scene");
        btn2.setOnAction(new EventHandler<ActionEvent>() {
            @Override public void handle(ActionEvent e) {
                System.out.println("This is second scene");
            }
        });
        Group root2 = new Group();
        Rectangle rec2 = new Rectangle(400,400);
        rec2.setFill(Color.LIGHTBLUE);
        root2.getChildren().addAll(rec2,btn2);
        final Scene s2 = new Scene(root2, 400, 400);
        
        new Thread(new Runnable(){
                public void run(){
                    try {
                        Thread.sleep(5000);
                    } catch (InterruptedException e) { }

                    Platform.runLater (new Runnable(){
                         public void run(){
                             primaryStage.setScene(s2);
                         }
                        });
                }
        }).start();

    }

}