HOWTO · Java
How to Get Selected Item From a ChoiceBox in JavaFX
This tutorial demonstrates how to get a selected item from a choicebox in JavaFX.
ChoiceBox is a part of the JavaFX library from which we can get a selected choice.
This tutorial demonstrates how to get a selected item from a ChoiceBox in JavaFX.
Get Selected Item From a ChoiceBox in JavaFX
ChoiceBox contains a set of items from which a user can select a choice that will be the currently selected item. The default choice in a choice box is a null entry.
The following methods are utilized to work with the ChoiceBox.
| Method | Description |
|---|---|
hide() |
This method will close the list of choices. |
setItems(ObservableList value) |
This sets the value of the property items. |
setValue(T value) |
This will set the value of the property value. |
getItems() |
This will get the value of the property items. |
getValue() |
This gets the value of the property value. |
show() |
This will open the list of choices. |
We use the following method to get the selected item from a choice box.
ChoiceBox.getSelectionModel().selectedIndexProperty()
Let’s get a selected item from a ChoiceBox using JavaFX.
package delftstack;
import javafx.application.Application;
import javafx.beans.value.*;
import javafx.collections.*;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.stage.Stage;
public class Choice_Box extends Application {
public void start(Stage Choice_Box_Stage) {
// title for the stage
Choice_Box_Stage.setTitle("ChoiceBox");
// button to show
Button Show_Button = new Button("Show Choice");
// tile pane
TilePane Title_Pane = new TilePane();
// labels
Label Label1 = new Label("This is a choice box, Please select your choice");
Label Label2 = new Label("No Choice selected");
// Choices array
String Choice_Array[] = {
"Delftstack 1", "Delftstack 2", "Delftstack 3", "Delftstack 4", "Delftstack 5"};
// choiceBox
ChoiceBox DemoChoiceBox = new ChoiceBox(FXCollections.observableArrayList(Choice_Array));
// adding a listener
DemoChoiceBox.getSelectionModel().selectedIndexProperty().addListener(
new ChangeListener<Number>() {
// if items of the list are changed
public void changed(ObservableValue ov, Number value, Number new_value) {
// text for the label to the selected item
Label2.setText(Choice_Array[new_value.intValue()] + " is Selected");
}
});
// ChoiceBox
Title_Pane.getChildren().add(Label1);
Title_Pane.getChildren().add(DemoChoiceBox);
Title_Pane.getChildren().add(Label2);
Scene sc = new Scene(Title_Pane, 400, 200);
// Setting the scene
Choice_Box_Stage.setScene(sc);
Choice_Box_Stage.show();
}
public static void main(String args[]) {
// launching the application
launch(args);
}
}
The code above demonstrates getting a select item from a ChoiceBox with JavaFX. See output:
