Chapter 11, Problem 6PP

Program Plan Intro

Modification of “RectangleComponent” class for mouse listener

Program plan:

• In a file “RectangleComponent.java”,
  • Create a package.
  • Import necessary default packages.
  • Create a class “RectangleComponent”,
    • Declare the necessary static variables.
    • Create “ArrayList”.
    • Define the constructor to set the list of rectangle.
    • Define the method “paintComponent()”,
      • Call the method “paintComponent()” of super class.
      • Create “Graphics2D” object.
      • Create loop to iterate over rectangle,
        • Call the method “repaint()”.
• In a file “RectangleFrame.java”,
  • Create a package.
  • Import necessary packages.
  • Create a class “RectangleFrame”,
    • Declare the necessary static variables.
    • Declare the “RectangleComponent” object.
    • Create a class “MousePressListener” that implement “MouseListener”,
      • Define the method “mousePressed()” ,
        • Set x location.
        • Set y location.
        • Insert a rectangle at given location.
      • Define do-nothing method “mouseReleased()”.
      • Define do-nothing  method “mouseClicked()”
      • Define do-nothing  method “mouseEntered()”
      • Define do-nothing  method “mouseExited()”
    • Define the constructor,
      • Create a rectangle.
      • Add the rectangle.
      • Create “MousePressListener” object.
      • Call the method “addMouseListener()”.
      • Set the size.
• In a file “RectangleViewer.java”,
  • Create a package.
  • Import necessary package.
  • Create a class “RectangleViewer”,
    • Define the method “main()”,
      • Create object for “RectangleFrame”.
      • Set the operation for the frame.
      • Make the frame visible.