Big Java Late Objects
Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
Question
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Chapter 11, Problem 8PE
Program Plan Intro

Rectangle

Program plan:

RandomRectanglesSliderFrame.java:

  • Create a class named “RandomRectanglesSliderFrame”. Inside the class,
    • Define the required components.
    • Set the width and height of the frame.
    • Define the “RandomRectanglesSliderFrame()” method.
      • Set the frame size
      • Define the panel
      • Add the components to the frame
      • Create the control panel.
    • Define the “createControlPanel()” method.
      • Define the slider.
      • Define the state change.
      • Define the action listener method.
      • Add the action to the slider
      • Position the slider
      • Set the rectangle value based on the slider movement.

RectangleComponent.java:

  • Create a class named “RectangleComponent”. Inside the class,
    • Define and declare the required variables.
    • Define the method “paintComponent”
      • Create the 2d graphics object
      • Generate the random rectangles
      • Loop that iterates for creating the rectangle
    • Define the method “setRectCount”
      • Assign the count value
      • Call the method to draw

RandomRectanglesViewer.java:

  • Create a class named “RandomRectanglesViewer”. Inside the class,
    • Define the “main()” method
      • Define the frame
      • Set the close operation
      • Set the title
      • Set the visibility.

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