Building Java Programs: A Back To Basics Approach, Loose Leaf Edition (5th Edition)
5th Edition
ISBN: 9780135472118
Author: Stuart Reges, Marty Stepp
Publisher: PEARSON
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Question
Chapter 3G, Problem 1PP
Program Plan Intro
Draw given picture
Program plan:
- Import necessary package.
- Create a class “DrawPattern”,
- Define the method “main()”,
- Construct “DrawingPanel” object.
- Set panel's background color as “CYAN”.
- Create "Graphics" object and call "getGraphics()" method.
- Assign the properties for top left point.
- Initialize the values.
- Create "Point" object for bottom left point.
- Initialize the variables.
- Create "Point" object for top right point.
- Initialize the variables.
- Create "Point" object for bottom right point.
- Initialize the variables.
- Call the method "draw_Pattern()" to draw the top left rectangle.
- Call the method "draw_Pattern()" to draw the Bottom left rectangle.
- Call the method "draw_Pattern()" to draw the top right rectangle.
- Call the method "draw_Pattern()" to draw the bottom right rectangle.
- Define the method “draw_Pattern()”,
- Assign the values.
- Execute loop for number of rows,
- Execute loop for number of columns,
- Compute the top center point of a single rectangle.
- Set the color to "GREEN".
- Call the method "fillRect()" to fill the rectangle with GREEN color.
- Set the color to "BLACK".
- Call the method "drawRect()" to draw the rectangle with BLACK border.
- Create an object for "Point" class.
- Call the method "draw_Circle()" to draw the circle.
- Set the color to "BLACK".
- Draw the vertical line.
- Draw the horizontal line.
- Execute condition to draw the circles inside the rectangle,
-
- Update the “x1” value.
- Update “y1” value.
- Reset x coordinate.
- Execute loop for number of columns,
- Define the method “draw_Circle()”,
- Compute the gap between the circles within the rectangle.
- Initialize the values for circle width and height.
- Initialize the top left point of circle.
- Execute loop for a number of circles,
- Set color to "YELLOW".
- Call the method to fill the oval with "YELLOW" color.
- Set color to "BLACK".
- Call the method to oval shape with "BLACK" color.
- Compute next circle at top left corner.
- Compute the width and height of next circle.
-
-
- Initiate coordinate value of next row.
- Update the value.
- Initiate coordinate value of next row.
-
-
- Define the method “main()”,
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