JavaFX Tutorial - Java CheckBox .setIndeterminate (boolean value)

Syntax

CheckBox.setIndeterminate(boolean value) has the following syntax.

public final void setIndeterminate(boolean value)

Example

In the following code shows how to use CheckBox.setIndeterminate(boolean value) method.

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.CheckBox;
import javafx.stage.Stage;
//from ww w  .  j ava 2  s.  co m
public class Main extends Application {
    public static void main(String[] args) {
        launch(args);
    }
    @Override
    public void start(Stage stage) {
        Scene scene = new Scene(new Group());
        stage.setWidth(300);
        stage.setHeight(150);
        final CheckBox cb = new CheckBox();
        cb.setText("checkBox");
        cb.setIndeterminate(true);
        
        cb.selectedProperty().addListener(new ChangeListener<Boolean>() {
           public void changed(ObservableValue<? extends Boolean> ov,
             Boolean old_val, Boolean new_val) {
             System.out.println(cb.isSelected());
          }
        });
        ((Group) scene.getRoot()).getChildren().add(cb);

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