Big Java Late Objects
Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
Question
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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”.

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