JavaFX CheckBox

JavaFX CheckBox Example

Let’s now see some of the examples:

Example1

Here we will see an example where we will create a simple checkbox in JavaFX.

Code

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

//Sample class extending the base class Application

public class App extends Application {

    @Override
    public void start(Stage s) {
        // set the title of the stage created
        s.setTitle("CheckBox Example");
       
        // Create a checkbox with the empty string as its label
        CheckBox cb1 = new CheckBox();

        // Create Some Checkbox with some string labels
        CheckBox cb2 = new CheckBox("Coding Ninjas");
        CheckBox cb3 = new CheckBox("Coding Ninjas Studio");

        // create a vertical box
        VBox vb = new VBox();

        // add all the checkbox in the vertical box
        vb.getChildren().addAll(cb1 , cb2, cb3);

        // set the spacing in the vertical box

        vb.setSpacing(5);

        // create a scene
        Scene sc = new Scene(vb, 500, 500);

        // set the scene
        s.setScene(sc);

        // display the result
        s.show();
    }

    // main method
    public static void main(String[] args) {
        // starting the application
        Application.launch(args);
    }
}

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Example2

Here in this section, we will see one example where we will create multiple checkboxes with the help of event handlers.

Code

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.layout.VBox;
import javafx.scene.layout.HBox;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.control.*;

// extending the application class

public class App extends Application {

    // launch application
    public void start(Stage s) {

        // set the title of the stage created
        s.setTitle("CheckBox Example with Event Handler");

        // Vertical box is created
        VBox vb = new VBox();

        // label is created
        Label lb1 = new Label("Get the Fruits of your choice");

        // Fruits array
        String fruits[] = { "Apple", "Mango", "Orange", "Banana", "lemon"};

        // add label
        vb.getChildren().add(lb1);

        for (int i = 0; i < fruits.length; i++) {

            // create a horizontal box
            HBox hb = new HBox();

            // create a checkbox
            CheckBox cb = new CheckBox(fruits[i]);

            // add the checkbox into horizontal box
            hb.getChildren().add(cb);
           
            // create a new lable
            Label lb2 = new Label(" (" + fruits[i] + " not taken)");

            String fr = fruits[i];

            // create an event handler
            EventHandler<ActionEvent> ev = new EventHandler<ActionEvent>() {
                public void handle(ActionEvent e) {
                    if (cb.isSelected())
                        lb2.setText(" (" + fr + " taken)");
                    else
                        lb2.setText(" (" + fr + " not taken)");
                }
            };

            // Setting the event in the checkbox
            cb.setOnAction(ev);

            // add the handler messgae
            hb.getChildren().add(lb2);

            // set spacing in the horizontal box
            hb.setSpacing(5);

            // finally add the horizontal box into the vertical box
            vb.getChildren().add(hb);
        }
       
        // set the spacing in the vertical box
        vb.setSpacing(5);

        // Create a scene
        Scene sc = new Scene(vb, 500, 500);

        // set the scene
        s.setScene(sc);

        // display the result
        s.show();
    }

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

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Output

Frequently Asked Questions

What is JavaFX?

JavaFX is the Java library consisting of graphics and media packages for developing desktop applications and rich client applications that can operate across multiple platforms.
 

What are the Rich Client Applications?

The Rich Client Applications are web applications that provide similar features and applications to desktop applications. Compared to the normal web application, it provides a better visual experience.
 

What is the use of JavaFX? 

The JavaFX consists of graphics and media packages that can create, debug, test and deploy rich client applications.
 

What are the main components of the JavaFX Application?

A JavaFX application consists of three major components: Stage, Scene and Nodes.

Conclusion

In this article, we have extensively discussed the JavaFX CheckBox. 

We started with the basic introduction. Then we discussed JavaFX CheckBox, the different states of JavaFX CheckBox, JavaFX CheckBox Constructors, and JavaFX CheckBox Methods. Finally, we showed two examples.

We hope that this blog gives you some ideas regarding JavaFX CheckBox. If you would like to learn more, follow our articles on  JavaFX. Explore our practice platform Coding Ninjas Studio to practice top problems, attempt mock tests, read interview experiences, interview bundle, follow guided paths for placement preparations and much more.!

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