Context Menu on a row of TableView?

try this..

ContextMenu cm = new ContextMenu();
MenuItem mi1 = new MenuItem("Menu 1");
cm.getItems().add(mi1);
MenuItem mi2 = new MenuItem("Menu 2");
cm.getItems().add(mi2);

table.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {

    @Override
    public void handle(MouseEvent t) {
        if(t.getButton() == MouseButton.SECONDARY) {
            cm.show(table, t.getScreenX(), t.getScreenY());
        }
    }
});

JavaFX 8 (with Lambda):

MenuItem mi1 = new MenuItem("Menu item 1");
mi1.setOnAction((ActionEvent event) -> {
    System.out.println("Menu item 1");
    Object item = table.getSelectionModel().getSelectedItem();
    System.out.println("Selected item: " + item);
});

ContextMenu menu = new ContextMenu();
menu.getItems().add(mi1);
table.setContextMenu(menu);

See also: https://docs.oracle.com/javase/8/javafx/api/javafx/scene/control/ContextMenu.html

I believe that the best solution would be this as discussed in here.

table.setRowFactory(
    new Callback<TableView<Person>, TableRow<Person>>() {
        @Override
        public TableRow<Person> call(TableView<Person> tableView) {
            final TableRow<Person> row = new TableRow<>();
            final ContextMenu rowMenu = new ContextMenu();
            MenuItem editItem = new MenuItem("Edit");
            editItem.setOnAction(...);
            MenuItem removeItem = new MenuItem("Delete");
            removeItem.setOnAction(new EventHandler<ActionEvent>() {
        
                @Override
                public void handle(ActionEvent event) {
                    table.getItems().remove(row.getItem());
                }
            });
            rowMenu.getItems().addAll(editItem, removeItem);
            
            // only display context menu for non-empty rows:
            row.contextMenuProperty().bind(
              Bindings.when(row.emptyProperty())
              .then((ContextMenu) null)
              .otherwise(rowMenu);
            return row;
    }
});