In JavaFX, a CheckBox is a user interface control that allows the user to select one or more options from a set of options. Here's an example of how to create and use CheckBox controls:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.CheckBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class MyJavaFXApp extends Application {
    
    @Override
    public void start(Stage primaryStage) {
        // Create some check boxes
        CheckBox checkBox1 = new CheckBox("Option 1");
        CheckBox checkBox2 = new CheckBox("Option 2");
        CheckBox checkBox3 = new CheckBox("Option 3");
        
        // Put the check boxes in a layout container
        VBox vbox = new VBox(10, checkBox1, checkBox2, checkBox3);
        
        // Create a scene and set it on the stage
        Scene scene = new Scene(vbox, 300, 250);
        primaryStage.setScene(scene);
        
        // Show the stage
        primaryStage.show();
    }
    
    public static void main(String[] args) {
        launch(args);
    }
}

In this example, we create three CheckBox controls and put them in a VBox layout container. We then create a scene with the VBox and set the scene on the stage. When the user clicks on a CheckBox, it will become selected or deselected, depending on its current state. To check which CheckBox controls are selected, you can use the isSelected() method of each CheckBox.