JavaFX选择框

import ;

import .value.ChangeListener;

import .value.ObservableValue;

import ;

import .Group;

import ;

import .control.ChoiceBox;

import .control.Label;

import .control.Tooltip;

import ;

public class Main extends Application {

  Rectangle rect = new Rectangle(150, 30);

  final Label label = new Label("Hello");

public static void main(String[] args) {

launch(args);

}

@Override

public void start(Stage stage) {

Scene scene = new Scene(new Group());

();

(scene);

();

(300);

(200);

("-fx-font: 25 arial;");

X(40);

();

(3);

();

    final String[] greetings = new String[] { "A", "B", "C", "D", "E" };

    final ChoiceBox<String> cb = new ChoiceBox<String>(

        ("a", "b", "c", "d", "e"));

().selectedIndexProperty()

        .addListener(new ChangeListener<Number>() {

          public void changed(ObservableValue ov, Number value, Number new_value) {

(greetings[new_value.intValue()]);

}

});

(new Tooltip("Select the language"));

("English");

HBox hb = new HBox();

().addAll(cb, label);

(30);

();

    (new Insets(10, 0, 0, 10));

((Group) ()).getChildren().add(hb);

}