JavaFX : Use a Thread more than once

Question

I\'m new with JavaFX and I\'ve a little problem with a thread: I can execute it twice and I can\'t find why.

Here is a sum-upt of my code:

Task

        

Answer 1

With a button can fire new tasks

                    Button btn = new Button();
                    btn.setText("New task");
                    btn.setOnAction(new EventHandler() {
                        @Override
                        public void handle(ActionEvent event) {
                            Executor ex=new Executor("Task"+count);
                            ex.start();
                            count++;
                            System.out.println("Task  Starting...");
                        }
                    });