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How to write conditions on button click in JavaFX

I want to make it so that when a button is pressed, different windows are displayed, and for this I need conditions. I don't want to create many methods for each button
This code doesn't work:
#Override
public void buttonOnAction(ActionEvent event){
if(btnReaders.isPressed()){
btnReaders.setOnAction(new EventHandler<ActionEvent>() {
#Override public void handle(ActionEvent e) {
Parent parent = null;
try {
parent = FXMLLoader.load(getClass().getResource("readersMenu.fxml"));
} catch (IOException ex) {
ex.printStackTrace();
}
Scene scene = new Scene(parent);
Stage window = (Stage) ((Node)event.getSource()).getScene().getWindow();
window.setScene(scene);
window.show();
}
});
}
else if(btnDashboard.isPressed()){
btnDashboard.setOnAction(new EventHandler<ActionEvent>() {
#Override public void handle(ActionEvent e) {
Parent parent = null;
try {
parent = FXMLLoader.load(getClass().getResource("librarianMenu.fxml"));
} catch (IOException ex) {
ex.printStackTrace();
}
Scene scene = new Scene(parent);
Stage window = (Stage) ((Node)event.getSource()).getScene().getWindow();
window.setScene(scene);
window.show();
}
});
}
}

Here is an example of a parameterized event handler that will open the selected FXML in a new scene that will be set for the same stage containing the source node of the event.
When the event handler is created, the application stores, in the event handler, the name of the FXML resource to be loaded.
The event handler is assigned to a button action.
When the button is actioned, the event handler loads a new FXML into a new scene and attaches that scene to the window that the button is defined in.
Example App
For this example, FXML files should be in the same location as the package containing the SceneSelector application.
SceneSelector.java
import javafx.application.Application;
import javafx.event.*;
import javafx.fxml.FXMLLoader;
import javafx.geometry.Insets;
import javafx.scene.*;
import javafx.scene.control.Button;
import javafx.scene.layout.*;
import javafx.stage.Stage;
import java.io.IOException;
import java.util.Objects;
public class SceneSelector extends Application {
#Override
public void start(Stage stage) {
Button sceneAButton = new Button("Scene A");
sceneAButton.setOnAction(
new SceneChangeEventHandler(
"sceneA.fxml"
)
);
Button sceneBButton = new Button("Scene B");
sceneBButton.setOnAction(
new SceneChangeEventHandler(
"sceneB.fxml"
)
);
Pane layout = new HBox(10,
sceneAButton,
sceneBButton
);
layout.setPadding(new Insets(10));
layout.setPrefSize(200, 150);
stage.setScene(
new Scene(layout)
);
stage.show();
}
class SceneChangeEventHandler implements EventHandler<ActionEvent> {
private final String fxmlResourceName;
public SceneChangeEventHandler(String fxmlResourceName) {
this.fxmlResourceName = fxmlResourceName;
}
#Override
public void handle(ActionEvent event) {
try {
Stage stage = (Stage) ((Node) event.getSource())
.getScene()
.getWindow();
changeScene(stage, fxmlResourceName);
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void changeScene(
Stage stage,
String fxmlResourceName
) throws IOException {
Parent parent = FXMLLoader.load(
Objects.requireNonNull(
getClass().getResource(
fxmlResourceName
)
)
);
Scene scene = new Scene(parent);
stage.setScene(scene);
stage.setTitle(fxmlResourceName);
stage.show();
}
public static void main(String[] args) {
launch();
}
}
sceneA.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.*?>
<StackPane xmlns="http://javafx.com/javafx"
xmlns:fx="http://javafx.com/fxml"
prefHeight="150.0" prefWidth="200.0" style="-fx-background-color: lemonchiffon;"/>
sceneB.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.*?>
<StackPane xmlns="http://javafx.com/javafx"
xmlns:fx="http://javafx.com/fxml"
prefHeight="150.0" prefWidth="200.0" style="-fx-background-color: azure;"/>

Cannot refresh scene/Nodes in JavaFX when update

I'm new to JavaFX. I try to program a simple GUI but I face those problem whom might be related.
I set files with a File Chooser and want to do pretty basic operations:
save the last folder used
write the name of the selected file in the VBox
Here's my code (which compiles):
import java.io.File;
import java.io.IOException;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Pane;
import javafx.scene.layout.VBox;
import javafx.stage.FileChooser;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
public class Main extends Application {
public static Stage primaryStageS;
public static Scene mainScene;
public void start(Stage primaryStage) throws Exception {
primaryStage.setScene((new Test(primaryStage).getScene()));
primaryStageS = primaryStage;
primaryStage.setTitle("Parcel Manager Main Page");
primaryStage.initStyle(StageStyle.DECORATED);
VBox main = new VBox(new Label("Test program"));
mainScene = new Scene(main, 800, 600);
primaryStage.setScene((new Test(primaryStage)).getScene());
primaryStage.show();
}
public static void main(String[] args) {
Application.launch(args);
}
public class Object1 {
String name;
public Object1(File f) throws IOException {
name = f.getName();
}
public String getName() {
return name;
}
}
public class Test {
Object1 collec;
String collecName;
File lastFolder;
Pane rootGroup;
public Test(Stage stage) {
setButtons(stage);
}
public void setButtons(Stage stageGoal) {
VBox vbox = new VBox();
Button b = getButton(stageGoal);
vbox.getChildren().addAll(b, new Label(getCollecName() == null ? "no name" : collecName));
final GridPane inputGridPane = new GridPane();
GridPane.setConstraints(vbox, 0, 0);
inputGridPane.getChildren().addAll(vbox);
rootGroup = new VBox(12);
rootGroup.getChildren().addAll(inputGridPane);
rootGroup.setPadding(new Insets(12, 12, 12, 12));
}
public Button getButton(Stage stage) {
FileChooser fileChooserParcel = new FileChooser();
fileChooserParcel.setInitialDirectory(getLastFolder());
Button button = new Button("Select a File");
button.setOnAction(e -> {
File f = fileChooserParcel.showOpenDialog(stage);
if (f != null) {
try {
collec = new Object1(f);
} catch (IOException e1) {
e1.printStackTrace();
}
setLastFolder(f.getParentFile());
setCollecName(collec);
setButtons(stage); // tried to reload every buttons - doesn't work
stage.setWidth(stage.getWidth() + 0.0001); // found this dirty hack but doesn't work
}
});
return button;
}
public void setCollecName(Object1 o1) {
collecName = o1.getName();
}
public String getCollecName() {
return collecName;
}
public File getLastFolder() {
return lastFolder;
}
public void setLastFolder(File folder) {
System.out.println("set last folder: " + folder);
lastFolder = folder;
}
private Scene getScene() {
return new Scene(rootGroup, 800, 600);
}
}
}
I cannot refresh the Nodes, either to set a current Initial Directory or display the collecName on the VBox. I tried to regenerate them with reloading of objects or resizing the window, but nothing works. When I print the variables on console, I see that they changes. But haven't found any refresh method for any of my objects.
I bet it's a design program issue, but I have been moving things around for the last week and doesn't know how to fix this.
Thanks !

You are only setting the initial directory once. I guess you want to set it every time you click the button. So move that line of code to inside the handler.
Compare the below getButton() method with yours.
public Button getButton(Stage stage) {
FileChooser fileChooserParcel = new FileChooser();
Button button = new Button("Select a File");
button.setOnAction(e -> {
fileChooserParcel.setInitialDirectory(getLastFolder()); // CHANGE HERE.
File f = fileChooserParcel.showOpenDialog(stage);
if (f != null) {
try {
collec = new Object1(f);
} catch (IOException e1) {
e1.printStackTrace();
}
setLastFolder(f.getParentFile());
setCollecName(collec);
setButtons(stage); // tried to reload every buttons - doesn't work
stage.setWidth(stage.getWidth() + 0.0001); // found this dirty hack but doesn't work
}
});
return button;
}

exception error in javafx

import java.io.File;
import java.util.Scanner;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.stage.Stage;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextArea;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
public class ShakespeareUI extends Application {
public String Quotes(String fileName) throws Exception{
File file = new File (fileName);
String line ="";
Scanner sc = new Scanner(file);
while(sc.hasNextLine()){
line+= sc.nextLine();
}
return line;
}
#Override // Override the start method in the Application class
public void start(Stage primaryStage)throws Exception {
BorderPane pane = new BorderPane();
// Top of Pane with Text
Pane paneForText = new Pane();
paneForText.setPadding(new Insets(0,0,5,0));
Text shText = new Text(25, 50,"Shakespeare Quotes");
shText.setFont(Font.font("Arial", 28));
paneForText.getChildren().add(shText);
pane.setTop(paneForText);
// Center of Border Pane with TextArea
TextArea taQuote = new TextArea();
taQuote.setPrefColumnCount(30);
taQuote.setPrefRowCount(5);
pane.setCenter(taQuote);
// Bottom of Pane with Buttons
HBox paneForButtons = new HBox(20);
Button btLear = new Button("King Lear");
Button btMacBeth = new Button("MacBeth");
Button btHamlet = new Button("Hamlet");
Button btRichard = new Button("Richard III");
Button btOthello = new Button("Othello");
pane.setBottom(paneForButtons);
paneForButtons.getChildren().addAll(btLear, btMacBeth, btHamlet, btRichard, btOthello );
paneForButtons.setAlignment(Pos.CENTER);
paneForButtons.setStyle("-fx-border-color: green");
// Create a scene and place it in the stage
Scene scene = new Scene(pane, 455, 150);
primaryStage.setTitle("Deep Patel"); // Set the stage title
primaryStage.setScene(scene); // Place the scene in the stage
primaryStage.show(); // Display the stage
////// Your code here that handles events when buttons are clicked
btLear.setOnAction(new EventHandler<ActionEvent>() {
#Override public void handle(ActionEvent e) {
shText.setText(btLear.getText());
taQuote.setText(Quotes("lear.txt"));
}
});
btMacBeth.setOnAction(new EventHandler<ActionEvent>(){
#Override public void handle(ActionEvent e){
shText.setText(btMacBeth.getText());
}
});
btHamlet.setOnAction(new EventHandler<ActionEvent>(){
#Override public void handle(ActionEvent e){
shText.setText(btHamlet.getText());
}
});
btRichard.setOnAction(new EventHandler<ActionEvent>(){
#Override public void handle(ActionEvent e){
shText.setText(btRichard.getText());
}
});
btOthello.setOnAction(new EventHandler<ActionEvent>(){
#Override public void handle(ActionEvent e){
shText.setText(btOthello.getText());
}
});
}
/////////////////////////////////////////////////////
/**
* The main method is only needed for the IDE with limited
* JavaFX support. Not needed for running from the command line.
*/
public static void main(String[] args) {
launch(args);
}
}
Hi, I am trying to run this code but there is error about exception. I have no idea what to do. Thanks in advance for any help. I tried to put exception in the override method, in the general method and then I just made new method and put exception there but still the same here
The error that I am getting is this:
ShakespeareUI.java:79: error: unreported Exception; must be caught or
declared to be thrown

The EventHandler method does not allow you to add a throws clause for non-runtime exceptions. Therefore you need to use try-catch to handle those exceptions even if you just handle them by rethrowing the exception as RuntimeException (which is not a good way to handle failed execution of code in most cases):
btLear.setOnAction(new EventHandler<ActionEvent>() {
#Override public void handle(ActionEvent e) {
shText.setText(btLear.getText());
try {
taQuote.setText(Quotes("lear.txt"));
} catch (Exception ex) {
// TODO: handle exception in a differnt way???
throw new RuntimeException(ex);
}
}
});
Note that you should close any classes accessing files as soon as you're done with the reader/writer. (Scanner in this case):
public String Quotes(String fileName) throws Exception{
File file = new File (fileName);
StringBuilder builder = new StringBuilder(); // builder more efficient for concatenating multiple strings
try(Scanner sc = new Scanner(file)) { // try-with-resources automatically calls close on scanner
while(sc.hasNextLine()) {
builder.append(sc.nextLine());
}
return builder.toString();
}
}

JavaFX Progress Indicator not updating properly

I am creating a JavaFX desktop app on which I am simulating some work load. I want the app to have a progress indicator that updates dynamically (with time passing at the moment) to show how the load process is progressing. This is my application class:
public class App extends Application {
#Override
public void init() throws InterruptedException{
//Simulation of time consuming code.
for(int i = 0; i<=10; i++) {
notifyPreloader(new Preloader.ProgressNotification(i/10));
System.out.println("Progress is being set by the app to: " + (i/10));
Thread.sleep(500);
}
}
#Override
public void start(Stage primaryStage) {
Parent root;
try {
root = FXMLLoader.load(getClass().getResource("/gui/fxml/App.fxml"));
Scene scene = new Scene(root, 600, 400);
scene.getStylesheets().add("/gui/style/app.css");
primaryStage.setScene(scene);
primaryStage.setTitle("Hello World!");
primaryStage.show();
} catch (IOException e) {
e.printStackTrace();
}
}
}
This is my preloader class:
public class AppPreloader extends Preloader {
private Stage preloaderStage;
private Parent root;
private Scene scene;
private ProgressIndicator progress_indicator;
#Override
public void start(Stage primaryStage) throws Exception {
this.preloaderStage = primaryStage;
this.preloaderStage.setScene(this.scene);
this.preloaderStage.show();
this.progress_indicator = (ProgressIndicator) scene.lookup("#progressIndicator");
}
#Override
public void init() throws Exception {
root = FXMLLoader.load(getClass().getResource("/gui/fxml/AppPreloader.fxml"));
Platform.runLater(new Runnable() {
#Override
public void run() {
scene = new Scene(root, 600, 400);
scene.getStylesheets().add("/gui/style/appPreloader.css");
}
});
}
#Override
public void handleProgressNotification(ProgressNotification pn) {
if(pn instanceof ProgressNotification){
progress_indicator.setProgress(pn.getProgress());
System.out.println("Progress is being set by the handle method to: " + pn.getProgress());
}
}
#Override
public void handleStateChangeNotification(StateChangeNotification evt) {
if (evt.getType() == StateChangeNotification.Type.BEFORE_START) {
preloaderStage.hide();
}
}
}
Whit the print sentences I've been able to identify two problems: First, the
handleProgressNotification method is being called twice, once to be set to 0 and other to be set to 1, before the loop of the init method of the App class starts. Who is making the call? How can I avoid it?
The second problem is that the print sentence inside the init method of the app class is always printing 0.0. How can that be possible? Is it a matter of concurrency?
In addition I need to say that I've checked both of this questions (progressbar in preloader does not update and javafx preloader not updating progress) and didn't find a solution for my problem.
Thanks a lot for your time.

First, you're not seeing the progress values you expect because you are using integer arithmetic: i and 10 are both integers, so i/10 is 0 for 0 <= i < 10 and 1 when i=10.
Second, the handleProgressNotification and handleStateChangeNotification methods are part of the lifecycle of the application that are related to loading the resources. These are really leftovers from the days when JavaFX still supported web deployments and are probably of limited use now.
To receive notifications from the application, you need to override the handleApplicationNotification(...) method instead. Here is a corrected version of the two classes (also modified to be stand-alone so they can be copied and run: please provide these kinds of examples in your questions) that works:
package application;
import javafx.application.Application;
import javafx.application.Preloader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class App extends Application {
#Override
public void init() throws InterruptedException{
//Simulation of time consuming code.
for(int i = 0; i<=10; i++) {
notifyPreloader(new Preloader.ProgressNotification(i/10.0));
System.out.println("Progress is being set by the app to: " + (i/10.0));
Thread.sleep(500);
}
notifyPreloader(new Preloader.StateChangeNotification(Preloader.StateChangeNotification.Type.BEFORE_START));
}
#Override
public void start(Stage primaryStage) {
Parent root;
root = new StackPane(new Label("Hello World"));
Scene scene = new Scene(root, 600, 400);
primaryStage.setScene(scene);
primaryStage.setTitle("Hello World!");
primaryStage.show();
}
}
package application;
import javafx.application.Preloader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class AppPreloader extends Preloader {
private Stage preloaderStage;
private Parent root;
private Scene scene;
private ProgressIndicator progress_indicator;
#Override
public void start(Stage primaryStage) throws Exception {
progress_indicator = new ProgressIndicator();
root = new StackPane(progress_indicator);
scene = new Scene(root, 600, 400);
this.preloaderStage = primaryStage;
this.preloaderStage.setScene(this.scene);
this.preloaderStage.show();
}
#Override
public void handleApplicationNotification(PreloaderNotification pn) {
if (pn instanceof ProgressNotification) {
//expect application to send us progress notifications
//with progress ranging from 0 to 1.0
double v = ((ProgressNotification) pn).getProgress();
progress_indicator.setProgress(v);
} else if (pn instanceof StateChangeNotification) {
StateChangeNotification scn = (StateChangeNotification) pn ;
if (scn.getType() == StateChangeNotification.Type.BEFORE_START) {
preloaderStage.hide();
}
}
}
}

How to swtich to new scene in the same stage JavaFX

I try to switch between scenes in same stage. I'm beginner in JavaFX so I don't know how to do it easily without spaghetti code. When I start code below I get null pointer at rootLayout.setCenter(content) in showCarChoosePage method (second scene). I know rootLayout is null and I was trying create new scene with and load it to primaryStage but then I got null pointer too. showCarChoosePage method is calling from LoginController. Thanks for your help
public class MC extends Application {
public Scene scene;
private GridPane grid;
public AnchorPane content;
public BorderPane rootLayout;
public Stage primaryStage;
#Override
public void start(Stage primaryStage) {
this.primaryStage = primaryStage;
this.primaryStage.setTitle("VMHT v0.1");
try {
FXMLLoader loader = new FXMLLoader(MC.class.getResource("view/RootLayout.fxml"));
rootLayout = (BorderPane) loader.load();
Scene scene = new Scene(rootLayout);
primaryStage.setScene(scene);
primaryStage.show();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
showLoginPage();
//showCarChoosePage();
}
public void showLoginPage(){
try {
FXMLLoader loader = new FXMLLoader(MC.class.getResource("view/LoginView.fxml"));
content = (AnchorPane) loader.load();
rootLayout.setCenter(content);
LoginController controller = loader.getController();
controller.setMC(this);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void showCarChoosePage(){
try {
FXMLLoader loader = new FXMLLoader(MC.class.getResource("view/CarChooseView.fxml"));
AnchorPane content = (AnchorPane) loader.load();
rootLayout.setCenter(content);
CarChooseController controller = loader.getController();
controller.setMC(this);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
}

Here is another way to handle multiple scenes. It uses Controllers for each scene. You must pass the initial stage that was created in Main to each new Controller. You must also pass whatever data you want to share from Controller to Controller. This is all done with methods that are added to your controllers.
In this simple case a Person object was created with name, sex, and age class variables as well as setters and getters for these objects.
Then I created 3 fxml files (using SceneBuilder) that displayed the name, sex, and age values. Of course, I also created 3 controllers, one for each fxml file.
The user was allowed to edit these values. One scene allowed name entry, another allowed sex entry, and the last allowed age entry. This simulated a complex app where data entry and processing was divided among 3 different scenes.
The three fxml files and the 3 controllers look very similar to one another. Here is the NameController. It first has setters for the Stage and Person objects. It also has button event handlers to allow the user to navigate to the other stages.
package multiscene;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Scene;
import javafx.scene.control.TextField;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;
import java.net.URL;
import java.util.ResourceBundle;
public class NameController implements Initializable {
#FXML private TextField lblSex;
#FXML private TextField lblAge;
#FXML private TextField txtName;
private Stage myStage;
private Person person;
public void setStage(Stage myStage) {
this.myStage = myStage;
}
public void setPerson(Person person) {
this.person = person;
lblAge.setText(person.getAge());
txtName.setText(person.getName());
lblSex.setText(person.getSex());
}
#FXML
private void ageClicked(ActionEvent event) throws Exception{
FXMLLoader loader = new FXMLLoader();
loader.setLocation(NameController.class.getResource("Age.fxml"));
AnchorPane page = (AnchorPane) loader.load();
Stage dialogStage = new Stage();
dialogStage.setTitle("Person Editor");
// dialogStage.initModality(Modality.WINDOW_MODAL);
//dialogStage.initOwner(primaryStage);
Scene scene = new Scene(page);
dialogStage.setScene(scene);
// Set the person into the controller
person.setName(txtName.getText());
AgeController newController = loader.getController();
newController.setStage(dialogStage);
newController.setPerson(person);
dialogStage.show();
myStage.close();
}
#FXML
private void sexClicked(ActionEvent event) throws Exception {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(AgeController.class.getResource("Sex.fxml"));
AnchorPane page = (AnchorPane) loader.load();
Stage dialogStage = new Stage();
dialogStage.setTitle("Person Editor");
// dialogStage.initModality(Modality.WINDOW_MODAL);
//dialogStage.initOwner(primaryStage);
Scene scene = new Scene(page);
dialogStage.setScene(scene);
// Set the person into the controller
person.setName(txtName.getText());
SexController newController = loader.getController();
newController.setStage(dialogStage);
newController.setPerson(person);
dialogStage.show();
myStage.close();
}
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
}
Main.java must initialize the Stage and the shared data as follows. Both the Stage and the shared data are passed to the first Scene when it is loaded.
package multiscene;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;
public class Main extends Application {
#Override
public void start(Stage primaryStage) throws Exception{
Person person = new Person();
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("Name.fxml"));
AnchorPane page = (AnchorPane) loader.load();
Stage dialogStage = new Stage();
dialogStage.setTitle("Person Editor");
Scene scene = new Scene(page);
dialogStage.setScene(scene);
NameController nameController = loader.getController();
nameController.setStage(dialogStage);
nameController.setPerson(person);
dialogStage.show();
}
public static void main(String[] args) {
launch(args);
}
}

Here is one simple method you might try
import javafx.stage.Stage;
public class ManyScenes extends Application {
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
Application.launch(args);
}
#Override
public void start(final Stage primaryStage) {
primaryStage.setTitle("Hello World");
Group root1 = new Group();
Group root2 = new Group();
Group root3 = new Group();
final Scene scene1 = new Scene(root1, 300, 250);
final Scene scene2 = new Scene(root2, 300, 250);
final Scene scene3 = new Scene(root3, 300, 250);
Button go1 = new Button();
go1.setLayoutX(100);
go1.setLayoutY(80);
go1.setText("Go to scene2");
go1.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
primaryStage.setScene(scene2);
}
});
root1.getChildren().addAll(new Label("Scene 1"), go1);
Button go2 = new Button();
go2.setLayoutX(100);
go2.setLayoutY(80);
go2.setText("Go to scene3");
go2.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
primaryStage.setScene(scene3);
}
});
root2.getChildren().addAll(new TextField(), go2);
Button go3 = new Button();
go3.setLayoutX(100);
go3.setLayoutY(80);
go3.setText("Back to scene1");
go3.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
primaryStage.setScene(scene1);
}
});
root3.getChildren().addAll(new TextArea(), go3);
primaryStage.setScene(scene1);
primaryStage.show();
}
}