Chapter 24, Problem 8PP

Program Plan Intro

Rectangle

Program plan:

Filename: “JFrame.java”

This program file is used to define a class “JFrame”. In the code,

• Import the required packages.
• Define a class “JFrame”.
  • Declare class members “size”, “components”.
  • Define a constructor “setSize”.
    • Initialize the class members.
  • Define a method “setDefaultCloseOperation()”.
  • Define a method “add()”.
  • Define a method “setVisible()”.
    • Define string.
    • Declare variable rect.
    • Define graphics and then set the properties.
    • Inside the try statement, Declare string extension.
    • Inside the catch statement, print the statement.

Filename: “RectangularShapeComponent.java”

This program file is used to define a class “RectangularShapeComponent”. In the code,

• Import the required packages.
• Define a class “RectangularShapeComponent”.
  • Declare the class members “RectangularShape”.
  • Define the constructor “RectangularShapeComponent()”.
  • Define a method “paintComponent()”.
    • Define Graphics2D “g2”.

Filename: “RectangularShapeParser.java”

This program file is used to define a class “RectangularShapeParser”. In the code,

• Import the required packages.
• Define a class “RectangularShapeParser”.
  • Declare the class members “builder”, “path”.
  • Define the constructor “RectangularShapeParser()”.
    • Declare DocumentBuilderFactory “factory”.
    • Declare “builder”.
    • Declare XPathFactory “xpfactory”.
    • Declare “path”.
  • Define a method “parse()”.
    • Declare file “f”.
    • Declare Document “doc”.
    • Create statements “x”, “y”, “width” and “height”.
    • Declare string “shapeType”.
    • In the if statement,
      • Define statement shape as rectangle.
        • Otherwise, in the else if statement,
        • • Define statement shape as ellipse.
        • In the else if statement,
        • • Define statement shape as RoundRectangle.

Filename: “RectangularShapeViewer.java”

This program file is used to define a class “RectangularShapeViewer”. In the code,

• Import the required packages.
• Define a class “RectangularShapeViewer”.
  • Define class main.
  • Define RectangularShapeParser “rp”.
  • Define RectangularShape “s”.
  • Define RectangularShapeComponent “rectComponent”.
  • Define JFrame “frame”.

Filename: “rectangularshape.xml”

This program file is used to define an XML file “rectangularshape”. In the code,

• Create an element named “x”.
• Create an element named “y”.
• Create an element named “width”.
• Create an element named “height”.