public class Login extends Fan2Fan {

public Login() {
    //Constructor
}
String ThisUser;

@Override
public void start(Stage primaryStage) {
    Fan2Fan fanConn = new Fan2Fan();
    Login loginConn = new Login();
    Signup signupConn = new Signup();
    Account accountConn = new Account();
    Homepage homepageConn = new Homepage();
    Matches matchesConn = new Matches();
    Rovers roversConn = new Rovers();
    Cork corkConn = new Cork();
    Dundalk dundalkConn = new Dundalk();
    Payment payConn = new Payment();
    Update updateConn = new Update();

    //Declare Login Page
    GridPane loginGrid = new GridPane();
    loginGrid.setAlignment(Pos.CENTER);
    loginGrid.setHgap(0);
    loginGrid.setVgap(10);
    //Login page title
    Text loginTitle = new Text("Please Login");
    loginTitle.setFont(Font.font("Tahoma", FontWeight.BOLD, 20));
    loginGrid.add(loginTitle, 0, 0, 5, 1);
    //Login UserName Details
    Label userNameLabel = new Label("User Name: ");
    loginGrid.add(userNameLabel, 0, 1);
    TextField userNameText = new TextField();
    userNameText.setPrefWidth(270);
    loginGrid.add(userNameText, 0, 2);
    ThisUser = userNameText.getText();
    //Login Password Details
    Label userPasswordLabel = new Label("Password: ");
    loginGrid.add(userPasswordLabel, 0, 4);
    PasswordField userPasswordText = new PasswordField();
    Label accountUserPassLabel = new Label();
    Tooltip tipPassword = new Tooltip();
    tipPassword.setText("Password is case sensitive");
    userPasswordText.setTooltip(tipPassword);
    userPasswordText.setPrefWidth(270);
    loginGrid.add(userPasswordText, 0, 5);
    //Login button
    Button btnLogin = new Button("Sign In");
    HBox hbBtnLogin = new HBox(270);
    hbBtnLogin.getChildren().add(btnLogin);
    btnLogin.setMaxHeight(24);
    btnLogin.setMaxWidth(270);
    btnLogin.setPrefSize(270, 24);
    loginGrid.add(hbBtnLogin, 0, 6);
    //Back Button
    Button btnBackLogin = new Button("Back");
    HBox hbBtnBackLogin = new HBox(270);
    hbBtnBackLogin.getChildren().add(btnBackLogin);
    btnBackLogin.setMaxHeight(24);
    btnBackLogin.setMaxWidth(270);
    btnBackLogin.setPrefSize(270, 24);
    loginGrid.add(hbBtnBackLogin, 0, 8);
    //Set Login Scene
    Scene loginScene = new Scene(loginGrid, 300, 275);

    primaryStage.setScene(loginScene);
    primaryStage.show();

    //Login button reads textfile to allow people to login
    btnLogin.setOnAction(e -> {
        try {
            // get the user name and password when user press on login button
            String userName = userNameText.getText();
            String password = userPasswordText.getText();
            Scanner read = null;
            int noOfLines = 0;
            try {

                read = new Scanner(new BufferedReader(new FileReader("users.txt")));
                while (read.hasNext()) {
                    //System.out.println(read.next());
                    noOfLines++;
                    for (int i = 0; i < noOfLines; i++) {
                        if (read.nextLine().equals(userName)) { // if the same user name

                            if (read.hasNextLine() && read.nextLine().equals(password)) { // check password
                                Alert loginSuccess = new Alert(Alert.AlertType.CONFIRMATION);
                                loginSuccess.setTitle("Welcome");
                                loginSuccess.setContentText("Welcome back!");
                                loginSuccess.showAndWait();
                                homepageConn.start(primaryStage);
                                // if also same, change boolean to true
                                break;// and break the for-loop
                            }
                        }
                    }
                }
                Alert loginFailAlert = new Alert(Alert.AlertType.ERROR);
                loginFailAlert.setTitle("Incorrect Username/Password");
                loginFailAlert.setContentText("Incorrect Username/Password entered. Please try again!");
                loginFailAlert.showAndWait();
                userNameText.clear();
                userPasswordText.clear();
            } catch (FileNotFoundException ex) {
                Logger.getLogger(Homepage.class.getName()).log(Level.SEVERE, null, ex);
            } finally {
                if (read != null) {
                    read.close();
                    System.out.println(noOfLines);
                }
            }
        } catch (Exception ee) {
            ee.printStackTrace();
        }
    });
    //Back button to mainpage
    btnBackLogin.setOnAction(e -> {
        fanConn.start(primaryStage);
    });

}

//Getter and setter to get value for ThisUser in username textfield
public void setName(String user) {
    ThisUser = user;
}

public String getName() {
    return ThisUser;
}

}

public class Homepage extends Fan2Fan {

public Homepage() {
    //Constructor
}

@Override
public void start(Stage primaryStage) {
    Fan2Fan fanConn = new Fan2Fan();
    Login loginConn = new Login();
    Signup signupConn = new Signup();
    Account accountConn = new Account();
    Homepage homepageConn = new Homepage();
    Matches matchesConn = new Matches();
    Rovers roversConn = new Rovers();
    Cork corkConn = new Cork();
    Dundalk dundalkConn = new Dundalk();
    Payment payConn = new Payment();
    Update updateConn = new Update();

    //Declare Homepage grid
    GridPane homepageGrid = new GridPane();
    homepageGrid.setAlignment(Pos.CENTER);
    homepageGrid.setHgap(0);
    homepageGrid.setVgap(10);
    //Purchase tickets button
    Button btnPurchaseTickets = new Button("Purchase Tickets");
    HBox hbBtnPurchaseTickets = new HBox(270);
    hbBtnPurchaseTickets.getChildren().add(btnPurchaseTickets);
    btnPurchaseTickets.setMaxHeight(24);
    btnPurchaseTickets.setMaxWidth(270);
    btnPurchaseTickets.setPrefSize(270, 24);
    homepageGrid.add(hbBtnPurchaseTickets, 5, 0);
    //Account Info Button
    Button btnAccountInfo = new Button("Account Information");
    HBox hbBtnAccountInfo = new HBox(270);
    hbBtnAccountInfo.getChildren().add(btnAccountInfo);
    btnAccountInfo.setMaxHeight(24);
    btnAccountInfo.setMaxWidth(270);
    btnAccountInfo.setPrefSize(270, 24);
    homepageGrid.add(hbBtnAccountInfo, 5, 1);
    //Become Seller Button
    Button btnBecomeSeller = new Button("Become a Seller");
    HBox hbBtnBecomeSeller = new HBox(270);
    hbBtnBecomeSeller.getChildren().add(btnBecomeSeller);
    btnBecomeSeller.setMaxHeight(24);
    btnBecomeSeller.setMaxWidth(270);
    btnBecomeSeller.setPrefSize(270, 24);
    homepageGrid.add(hbBtnBecomeSeller, 5, 2);
    //Exit Button
    Button btnHomepageExit = new Button("Exit");
    HBox hbBtnHomepageExit = new HBox(270);
    hbBtnHomepageExit.getChildren().add(btnHomepageExit);
    btnHomepageExit.setMaxHeight(24);
    btnHomepageExit.setMaxWidth(270);
    btnHomepageExit.setPrefSize(270, 24);
    homepageGrid.add(hbBtnHomepageExit, 5, 3);
    //Declare Homepage scene
    Scene homepageScene = new Scene(homepageGrid, 300, 275);

    primaryStage.setScene(homepageScene);
    primaryStage.show();

    //Open account Information
    btnAccountInfo.setOnAction( e-> {
        accountConn.start(primaryStage);
    });
    //Open Match selection
    btnPurchaseTickets.setOnAction(e ->{
       matchesConn.start(primaryStage);
    });
    //Exit button button to homepage
    btnHomepageExit.setOnAction(e -> {
        primaryStage.close();
    });

}
}

//AccountUserName Details
    Label accountUserLabel = new Label("User:");
    accountInfoGrid.add(accountUserLabel, 0, 2);
    Label loginUserLabel = new Label();
    loginUserLabel = loginConn.getName();
    accountInfoGrid.add(loginUserLabel, 1, 2);