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package comboboxsample; import javafx.application.Application; import javafx.beans.value.ChangeListener; import javafx.beans.value.ObservableValue; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.geometry.Insets; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.control.*; import javafx.scene.layout.GridPane; import javafx.scene.paint.Color; import javafx.stage.Stage; import javafx.util.Callback; public class ComboBoxSample extends Application { public static void main(String[] args) { launch(args); } final Button button = new Button ("Send"); final Label notification = new Label (); final TextField subject = new TextField(""); final TextArea text = new TextArea (""); String address = " "; @Override public void start(Stage stage) { stage.setTitle("ComboBoxSample"); Scene scene = new Scene(new Group(), 450, 250); final ComboBox emailComboBox = new ComboBox(); emailComboBox.getItems().addAll( "jacob.smith@example.com", "isabella.johnson@example.com", "ethan.williams@example.com", "emma.jones@example.com", "michael.brown@example.com" ); emailComboBox.setPromptText("Email address"); emailComboBox.setEditable(true); emailComboBox.valueProperty().addListener(new ChangeListener<String>() { @Override public void changed(ObservableValue ov, String t, String t1) { address = t1; } }); final ComboBox priorityComboBox = new ComboBox(); priorityComboBox.getItems().addAll( "Highest", "High", "Normal", "Low", "Lowest" ); priorityComboBox.setValue("Normal"); priorityComboBox.setCellFactory( new Callback<ListView<String>, ListCell<String>>() { @Override public ListCell<String> call(ListView<String> param) { final ListCell<String> cell = new ListCell<String>() { { super.setPrefWidth(100); } @Override public void updateItem(String item, boolean empty) { super.updateItem(item, empty); if (item != null) { setText(item); if (item.contains("High")) { setTextFill(Color.RED); } else if (item.contains("Low")){ setTextFill(Color.GREEN); } else { setTextFill(Color.BLACK); } } else { setText(null); } } }; return cell; } }); button.setOnAction(new EventHandler<ActionEvent>() { @Override public void handle(ActionEvent e) { if (emailComboBox.getValue() != null && !emailComboBox.getValue().toString().isEmpty()){ notification.setText("Your message was successfully sent" + " to " + address); emailComboBox.setValue(null); if (priorityComboBox.getValue() != null && !priorityComboBox.getValue().toString().isEmpty()){ priorityComboBox.setValue(null); } subject.clear(); text.clear(); } else { notification.setText("You have not selected a recipient!"); } } }); GridPane grid = new GridPane(); grid.setVgap(4); grid.setHgap(10); grid.setPadding(new Insets(5, 5, 5, 5)); grid.add(new Label("To: "), 0, 0); grid.add(emailComboBox, 1, 0); grid.add(new Label("Priority: "), 2, 0); grid.add(priorityComboBox, 3, 0); grid.add(new Label("Subject: "), 0, 1); grid.add(subject, 1, 1, 3, 1); grid.add(text, 0, 2, 4, 1); grid.add(button, 0, 3); grid.add (notification, 1, 3, 3, 1); Group root = (Group)scene.getRoot(); root.getChildren().add(grid); stage.setScene(scene); stage.show(); } }