Chapter 15, Problem 2SA

Explanation of Solution

Scene graph:

• A scene graph denotes a hierarchical data structure used for organizing components in JavaFX Graphical User Interface (GUI).
• It denotes a tree-like structure that contains nodes.
• The three types of nodes in scene graph are shown below:
  • Root Node:
    • A scene graph can have a single root node only.
    • It denotes a parent of other nodes in scene graph.
    • It denotes first node in structure.
  • Branch Node:
    • A branch node can have other nodes as children...