ObservableList<sample.Table> users = FXCollections.observableArrayList();
        users.add(new Table("Try", "Here"));
        users.add(new Table("Okay", "Second"));

        TableColumn online = new TableColumn("Online");
        online.setMinWidth(300);
        online.setCellValueFactory(
                new PropertyValueFactory<Table,String>("fieldValue"));

        allUsers.setEditable(false);
        allUsers.getItems().addAll(users);
        allUsers.getColumns().addAll(online);