Chapter 20, Problem 7PE

Program Plan Intro

Rectangle

Program plan:

RandomRectanglesFrame.java:

• Create a class named “RandomRectanglesFrame”. Inside the class,
  • Define the required components.
  • Set the width and height of the frame.
  • Define the required varaibles.
  • Define the “RandomRectanglesFrame ()” method.
    • Set the frame size
    • Define the panel
    • Add the components to the frame
    • Create the control panel.
  • Define the “createControlPanel ()” method.
    • Define the button.
    • Add the button to the panel.
    • Position the components
    • Set the rectangle value based on the button action.
  • Define the “makeButton ()” method.
    • Define the button.
    • Define the class “ButtonListener”,
      • Define the method action performed.
        • Calculate the count
      • Define the listener
      • Add the action listener
      • Return the button.

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.