JavaFX 多选框(CheckBox

    @Override
    public void start(Stage primaryStage) throws Exception {
        CheckBox r1 = new CheckBox("r1");
        CheckBox r2 = new CheckBox("r2");
        CheckBox r3 = new CheckBox("r3");
        CheckBox r4 = new CheckBox("r4");
        r1.setSelected(true);//设置为选中状态
        r2.setIndeterminate(true);//设置为不确定状态（中间一横线
        r3.setAllowIndeterminate(true);//在不选/不确定/选中 三种状态切换
        //监听选中状态
        r4.selectedProperty().addListener(new ChangeListener<Boolean>() {
            @Override
            public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
            }
        });
        HBox box = new HBox();
        box.getChildren().addAll(r1,r2,r3,r4);
        AnchorPane root = new AnchorPane();
        root.getChildren().addAll(box);
        primaryStage.setScene(new Scene(root));
        primaryStage.setHeight(400);
        primaryStage.setWidth(600);
        primaryStage.show();
    }