Chapter 10, Problem 16PE

Program Plan Intro

Implementation of “randomShape()” method

Program plan:

• In a file “RandomShapeGenerator.java”,
  • Create a package.
  • Import necessary default packages.
  • Create a class “RandomShapeGenerator”,
    • Declare “Random” object.
    • Declare the necessary variables.
    • Define the constructor to set the Random object and the initial values.
    • Define a method “randomshape()”,
      • Set the random locations.
      • Initialize the default variables that denote width and height.
      • Check whether the position is “0”,
        • Retrieve the rectangle.
      • Otherwise check whether the position is “1”,
        • If it is true, retrieve the ellipse.
      • Otherwise, retrieve the line.
• In a file “RandomShapesComponent.java”, create a package, import necessary default packages and then create a class “RandomShapesComponent”,
  • Define the method “paintComponent()”,
    • Create “Graphics2D” object.
    • Create an object for “RandomShapeGenerator”.
    • Create loop to iterate for “10” times,
      • Call the method to draw the random shapes.
• In a file “RandomShapeViewer.java”, create a package, import necessary packages and create a class “RandomShapeViewer”,
  • Define the method “main()”,
    • Create object for “JFrame”.
    • Initialize default variables.
    • Set the size for frame.
    • Set the title for frame.
    • Set the operation for frame.
    • Create an object for “RandomShapesComponent”.
    • Add the object into the frame.
    • Make the frame visible.