Reading data from db and showing progress indicator at the same time

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I need help with showing progress indicator while reading the data from the database. An example that I have done is interrupted in the middle of a new thread and continues to run a main thread. When the main thread is carried out until the end, then the execution of another thread continues. What is missing in this?

private void loadingData() throws InterruptedException{

    prgIndLogin.setVisible(true);
    prgIndLogin.setProgress(-1);

    Thread newThrd = new Thread(new Runnable() {
        @Override
        public void run() {


            try {
                KorisnikJpaController korCont = new KorisnikJpaController(Persistence.createEntityManagerFactory("LawOfficeV2PU"));
                EntityManager em = korCont.getEntityManager();

                logedUser = (Korisnik) em.createNamedQuery("Korisnik.findByUsernameAndPassword")
                                        .setParameter("usernamekor", tbxUsername.getText())
                                        .setParameter("passwordkor", passField.getText())
                                        .getSingleResult();

                em.close();
                status=true;
            } catch(Exception e) {
                status = false;
                e.printStackTrace();
            } finally {
                Platform.runLater(new Runnable() {
                    @Override
                    public void run() {
                        prgIndLogin.setVisible(false);
                    }
                });
            }
        }
    });
    newThrd.start();

}

asked 1 min ago

user3416688

1