Adding change listener to selected property : ChangeListener « JavaFX « Java

1. Java
2. JavaFX
3. ChangeListener

Adding change listener to selected property

 
import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.CheckBox;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class Main extends Application {

    final String[] names = new String[]{"A", "B", "C"};
    final CheckBox[] cbs = new CheckBox[names.length];

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage stage) {
        Scene scene = new Scene(new Group());
        stage.setTitle("Checkbox Sample");
        stage.setWidth(230);
        stage.setHeight(120);

        for (int i = 0; i < names.length; i++) {
            final CheckBox cb = cbs[i] = new CheckBox(names[i]);
            cb.selectedProperty().addListener(new ChangeListener<Boolean>() {
                public void changed(ObservableValue ov,Boolean old_val, Boolean new_val) {
                        System.out.println(new_val);
                }
            });
        }

        VBox vbox = new VBox();
        vbox.getChildren().addAll(cbs);
        vbox.setSpacing(5);

        HBox hbox = new HBox();
        hbox.setPadding(new Insets(0, 0, 0, 5));

        StackPane stack = new StackPane();
        stack.getChildren().add(hbox);

        HBox root = new HBox();
        root.getChildren().add(vbox);
        root.getChildren().add(stack);
        root.setSpacing(40);
        root.setPadding(new Insets(20, 10, 10, 20));

        ((Group) scene.getRoot()).getChildren().add(root);

        stage.setScene(scene);
        stage.show();
    }
}

   
  

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