Chapter 1.4, Problem 33STQ

Explanation of Solution

The below code is given in the text book “Listing 1.2”.

Program:

//Import required packages

import javafx.application.Application;

import javafx.scene.canvas.Canvas;

import javafx.scene.Group;

import javafx.scene.Scene;

import javafx.stage.Stage;

import javafx.scene.canvas.GraphicsContext;

import javafx.scene.shape.ArcType;

//Definition of class "HappyFace"

public class HappyFace extends Application

{

    //Definition of class "main"

    public static void main(String[] args)

    {

        //Call the method "launch"

        launch(args);

    }

    //Definition of method start()

    public void start(Stage primaryStage) throws Exception

    {

/*Setting a canvas on a scene to draw a graphics*/

        Group root=new Group();

        Scene scene=new Scene(root);

        Canvas canvas=new Canvas(400,300);

GraphicsContext c=canvas.getGraphicsContext2D();

        //Method invocation to draw the outline of face

        gc...