Question

Using javaFX components

Answer 1

Answer:

package colorchanger;

import javafx.application.Application;

import javafx.geometry.Insets;

import javafx.scene.Scene;

import javafx.scene.control.RadioButton;

import javafx.scene.control.ToggleGroup;

import javafx.scene.layout.HBox;

import javafx.stage.Stage;

public class ColorChanger extends Application {

   @Override

   public void start(Stage primaryStage) {

       //Create the two radio buttons

       RadioButton radio1 = new RadioButton("White");

       RadioButton radio2 = new RadioButton("Red");

       //Create a toggle group for the buttons

       ToggleGroup tg = new ToggleGroup();

       //Add the two buttons to the toggle group

       radio1.setToggleGroup(tg);

       radio2.setToggleGroup(tg);

       //Create an HBox to hold the two radio buttons

       HBox hb = new HBox();

       hb.getChildren().addAll(radio1, radio2);

       hb.setPadding(new Insets(10));

       hb.setSpacing(10);

       hb.setPrefSize(30, 15);

       //Set action for the two buttons

       //When the radio1 button is clicked, the background color of the horizontal box (HBox) changes to white

       radio1.setOnAction(e -> {

           hb.setStyle("-fx-background-color:white");

       });

       //When the radio2 button is clicked, the background color of the horizontal box (HBox) changes to red

       radio2.setOnAction(e -> {

           hb.setStyle("-fx-background-color:red");

       });

       //Create a scene to hold the HBox

       Scene scene = new Scene(hb, 300, 250);

       //Create a primary stage to act as window

       primaryStage.setTitle("Color Changer");

       primaryStage.setScene(scene);

       primaryStage.show();

   }

   /**

    * @param args the command line arguments

    */

   public static void main(String[] args) {

       launch(args);

   }

}

Explanation:

Go through the comments in the code for explanation.

The source code file has also been attached to this response.

Hope this helps!

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