java code

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.image.Image;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

public class Main extends Application {

	Button nPg2, nPg3, nPg4, nPg5, nPg6;
	Stage stage;
	Scene scene1, scene2, scene3, scene4, scene5, scene6;
	Button lPg1, lPg2, lPg3, lPg4, lPg5;
	int pageNum = 1;

	public static void main(String[] args) {
		// setup javafx
		launch(args);
	}

	@Override
	public void start(Stage stage) throws Exception{
		Label body1 = new Label("first page");
		Label body2 = new Label("second page");
		Label body3 = new Label("third page");
		Label body4 = new Label("last page");
		Image img1, img2, img3, img4, img5;
		nPg2 = new Button("NextPage2");
		nPg3 = new Button("NextPage3");
		nPg4 = new Button("NextPage4");
		nPg5 = new Button("NextPage5");
		//sets the text of the buttons and the labels, and declares all the images
		nPg2.setOnAction(new EventHandler<ActionEvent>(){
			@Override
			public void handle(ActionEvent event) {
				stage.setScene(scene2);
			}
		}	);
		//makes next page 2 go to page 2
		HBox layout1 = new HBox(5);
		//makes a new layout with 5 px seperation
		layout1.getChildren().addAll(body1, nPg2);
		//adds both of the buttons and body1 to the layout
		scene1 = new Scene(layout1, 300, 250);
		//makes scene1 from layout1 and dimensions
		HBox layout2 = new HBox(5);
		//makes layout2
		layout2.getChildren().addAll(lPg1, body2, nPg3);
		scene2 = new Scene(layout2, 300, 250);
		stage.setScene(scene1);
		stage.setTitle("title");
		stage.show();
	}
}