JAVA FX

Question 1

Briefly describe the scene in javaFX

Answer 1

• A scene represents the physical contents of a JavaFX application.
• It contains all the contents of a scene graph.

Question 2

How can one create a scene i javaFX?

Answer 2

• The class Scene of the package javafx.scene represents the scene
object.
• At an instance, the scene object is added to only one stage. You can
create a scene by instantiating the Scene Class.
• You can opt for the size of the scene by passing its dimensions (height
and width) along with the root node to its constructor.

Question 3

What is the Node class

Answer 3

• The Node Class of the package javafx.scene represents a node in JavaFX
• This class is the super class of all the nodes.

Question 4

Describe branch/parent nodes and their types related classes

Answer 4

The node with child nodes are known as
branch/parent nodes. The abstract class named Parent of the package
javafx.scene is the base class of all the parent nodes, and those parent
nodes will be of the following types – Group, Region and webview

Question 5

Describe group nodes

Answer 5

A group node is a collective node that contains a
list of children nodes. Whenever the group node is
rendered, all its child nodes are rendered in order. Any
transformation, effect state applied on the group will be
applied to all the child nodes.

Question 6

Describe region nodes

Answer 6

It is the base class of all the JavaFX Node based UI
Controls, such as Chart, Pane and Control.

Question 7

Describe webview nodes

Answer 7

This node manages the web engine and

displays its contents.

Question 8

Describe the leaf nodes and give examples

Answer 8

The node without child nodes is known as the leaf node. For
example Rectangle, Ellipse, Box, ImageView, MediaView are examples of
leaf nodes.

Question 9

Why is it necessary to pass the root node to the scene graph

Answer 9

It is mandatory to pass the root node to the scene graph. If the Group is passed as root, all the nodes will be clipped to the scene and any
alteration in the size of the scene will not affect the layout of the scene.