JavaFX RadioButton Tutorial

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JavaFX RadioButton
RadioButton Example
Processing Events for RadioButton

1- JavaFX RadioButton

RadioButton is a class extends from ToggleButton, the same as a ToggleButton, radio button has the two states selected and deselected. When RadioButtons are combined into a group, at a time only one button is selected. Unlike ToggleButton, users can only deselect a RadioButton by selecting a different RadioButton in the same group.

ToggleButton:

RadioButton:

// Group
ToggleGroup group = new ToggleGroup();

// Radio 1: Male
RadioButton button1 = new RadioButton("Male");
button1.setToggleGroup(group);
button1.setSelected(true);

// Radio 3: Female.
RadioButton button2 = new RadioButton("Female");
button2.setToggleGroup(group);

You can also set up the icons for RadioButton by using setGraphic method.

InputStream is1 = getClass().getResourceAsStream("/org/o7planning/javafx/icon/male-16.png");
Image img1= new Image(is1);

radioButton.setGraphic(new ImageView(img1));

2- RadioButton Example

RadioButtonDemo.java

package org.o7planning.javafx.radiobutton;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.RadioButton;
import javafx.scene.control.ToggleGroup;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

public class RadioButtonDemo extends Application {

    @Override
    public void start(Stage stage) {

        Label label = new Label("Your Gender: ");

        // Group
        ToggleGroup group = new ToggleGroup();

        // Radio 1: Male
        RadioButton button1 = new RadioButton("Male");
        button1.setToggleGroup(group);
        button1.setSelected(true);

        // Radio 3: Female.
        RadioButton button2 = new RadioButton("Female");
        button2.setToggleGroup(group);

        HBox root = new HBox();
        root.setPadding(new Insets(10));
        root.setSpacing(5);
        root.getChildren().addAll(label, button1, button2);

        Scene scene = new Scene(root, 400, 150);
        stage.setScene(scene);
        stage.setTitle("JavaFX RadioButton (o7planning.org)");
        scene.setRoot(root);
        stage.show();
    }

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

}

3- Processing Events for RadioButton

Typically, the application performs an action when one of the radio buttons in the group is selected.

RadioButtonEventDemo.java

package org.o7planning.javafx.radiobutton;

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.RadioButton;
import javafx.scene.control.Toggle;
import javafx.scene.control.ToggleGroup;
import javafx.scene.image.Image;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

@SuppressWarnings("unused")
public class RadioButtonEventDemo extends Application {

   @Override
   public void start(Stage stage) {

       Label label = new Label("Your Gender: ");
       Label labelInfo = new Label();
       labelInfo.setTextFill(Color.BLUE);

       // Group
       ToggleGroup group = new ToggleGroup();

       group.selectedToggleProperty().addListener(new ChangeListener<Toggle>() {
           @Override
           public void changed(ObservableValue<? extends Toggle> ov, Toggle old_toggle, Toggle new_toggle) {
               // Has selection.
               if (group.getSelectedToggle() != null) {
                   RadioButton button = (RadioButton) group.getSelectedToggle();
                   System.out.println("Button: " + button.getText());
                   labelInfo.setText("You are " + button.getText());
               }
           }
       });

       // Radio 1: Male
       RadioButton button1 = new RadioButton("Male");
       button1.setToggleGroup(group);
       button1.setSelected(true);

       // Radio 2: Female.
       RadioButton button2 = new RadioButton("Female");
       button2.setToggleGroup(group);

       HBox root = new HBox();
       root.setPadding(new Insets(10));
       root.setSpacing(5);
       root.getChildren().addAll(label, button1, button2, labelInfo);

       Scene scene = new Scene(root, 400, 150);
       stage.setScene(scene);
       stage.setTitle("JavaFX RadioButton (o7planning.org)");
       scene.setRoot(root);
       stage.show();
   }

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

}

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