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Design, write, and test two programs

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Design, write, and test two programs, each of which draws one hundred random circles. One program should use a while statement, the other, a for statement.;The circles should be placed at random locations, with random diameters and colors. Each circle should use two random colors: one for the fill (interior), and one for the stroke (circumference).;Each circle must fit entirely within the drawing window, however, circles may overlap.;6.5);//********************************************************************;// Bullseye.java Author: Lewis/Loftus;//;// Demonstrates the use of loops to draw.;//********************************************************************;import javax.swing.JFrame;public class Bullseye;//-----------------------------------------------------------------;// Creates the main frame of the program.;//-----------------------------------------------------------------;public static void main (String[] args);JFrame frame = new JFrame ("Bullseye");frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);BullseyePanel panel = new BullseyePanel();frame.getContentPane().add(panel);frame.pack();frame.setVisible(true);6.6);//********************************************************************;// BullseyePanel.java Author: Lewis/Loftus;//;// Demonstrates the use of conditionals and loops to guide drawing.;//********************************************************************;import javax.swing.JPanel;import java.awt.*;public class BullseyePanel extends JPanel;private final int MAX_WIDTH = 300, NUM_RINGS = 5, RING_WIDTH = 25;//-----------------------------------------------------------------;// Sets up the bullseye panel.;//-----------------------------------------------------------------;public BullseyePanel ();setBackground (Color.cyan);setPreferredSize (new Dimension(300,300));//-----------------------------------------------------------------;// Paints a bullseye target.;//-----------------------------------------------------------------;public void paintComponent (Graphics page);super.paintComponent (page);int x = 0, y = 0, diameter = MAX_WIDTH;page.setColor (Color.white);for (int count = 0, count < NUM_RINGS, count++);if (page.getColor() == Color.black) // alternate colors;page.setColor (Color.white);else;page.setColor (Color.black);page.fillOval (x, y, diameter, diameter);diameter -= (2 * RING_WIDTH);x += RING_WIDTH;y += RING_WIDTH;// Draw the red bullseye in the center;page.setColor (Color.red);page.fillOval (x, y, diameter, diameter);6.7);//********************************************************************;// Boxes.java Author: Lewis/Loftus;//;// Demonstrates the use of loops to draw.;//********************************************************************;import javax.swing.JFrame;public class Boxes;//-----------------------------------------------------------------;// Creates the main frame of the program.;//-----------------------------------------------------------------;public static void main (String[] args);JFrame frame = new JFrame ("Boxes");frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);BoxesPanel panel = new BoxesPanel();frame.getContentPane().add(panel);frame.pack();frame.setVisible(true);6.8);//********************************************************************;// BoxesPanel.java Author: Lewis/Loftus;//;// Demonstrates the use of conditionals and loops to guide drawing.;//********************************************************************;import javax.swing.JPanel;import java.awt.*;import java.util.Random;public class BoxesPanel extends JPanel;private final int NUM_BOXES = 50, THICKNESS = 5, MAX_SIDE = 50;private final int MAX_X = 350, MAX_Y = 250;private Random generator;//-----------------------------------------------------------------;// Sets up the drawing panel.;//-----------------------------------------------------------------;public BoxesPanel ();generator = new Random();setBackground (Color.black);setPreferredSize (new Dimension(400, 300));//-----------------------------------------------------------------;// Paints boxes of random width and height in a random location.;// Narrow or short boxes are highlighted with a fill color.;//-----------------------------------------------------------------;public void paintComponent(Graphics page);super.paintComponent (page);int x, y, width, height;for (int count = 0, count < NUM_BOXES, count++);x = generator.nextInt(MAX_X) + 1;y = generator.nextInt(MAX_Y) + 1;width = generator.nextInt(MAX_SIDE) + 1;height = generator.nextInt(MAX_SIDE) + 1;if (width <= THICKNESS) // check for narrow box;page.setColor (Color.yellow);page.fillRect (x, y, width, height);else;if (height <= THICKNESS) // check for short box;page.setColor (Color.green);page.fillRect (x, y, width, height);else;page.setColor (Color.white);page.drawRect (x, y, width, height)

 

Paper#69479 | Written in 18-Jul-2015

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