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

Do it with a wraper class

            import java.io.IOException;
            import javafx.concurrent.Task;

            public class Executor {
                private String name;
                private Task task;

                public Executor(final String name) {
                    this.name=name;
                    task = new Task() {
                        @Override
                        public Void call() throws IOException, InterruptedException {
                            try {
                                int i=0;
                                while(i<20){
                                    System.out.println(name);
                                    Thread.sleep(2000);
                                    i++;
                                }
                                return null;
                            } catch (IllegalThreadStateException e) {
                                System.out.println(e);
                            }
                            return null;
                        }

                        @Override
                        protected void succeeded() {
                            super.succeeded();
                            try {
                                System.out.println(name+"  finish");
                            } catch (Exception ex) {
                                System.out.println(ex);
                            }
                        }
                    };
                }

                public void start() {
                    try {
                                Thread th = new Thread(task);
                                th.start();
                            } catch (Exception ex) {
                                System.out.println(ex);
                            }
                }
            }