package com.javapapers.designpattern.flyweight;     
import java.awt.Color;  import java.awt.Graphics;     
public interface MyShape {  
  public void draw(Graphics g, int x, int y, int width, int height,        
  Color color, boolean fill, String font);  
} package com.javapapers.designpattern.flyweight;   
import java.awt.Color;  
import java.awt.Font;  
import java.awt.Graphics;  
public class MyOval implements MyShape {     
  private String label;       
  public MyOval(String label) {    
    this.label = label;       
  }  
  public void draw(Graphics oval, int x, int y, int width, int height,        
  Color color, boolean fill, String font) {    
    oval.setColor(color);      
	oval.drawOval(x, y, width, height);      
	oval.setFont(new Font(font, 12, 12));      
	oval.drawString(label, x + (width / 2), y);      
	if (fill)        
	oval.fillOval(x, y, width, height);   
  }  
} 
package com.javapapers.designpattern.flyweight;     
import java.awt.Color;  
import java.awt.Font;  
import java.awt.Graphics;
public class MyRectangle implements MyShape { 
  private String label;
  public MyRectangle(String label) {
     this.label = label;
  }
  public void draw(Graphics rectangle, int x, int y, int width, int height,
  Color color, boolean fill, String font) { 
     rectangle.setColor(color);      
     rectangle.drawRect(x, y, width, height);      
     rectangle.setFont(new Font(font, 12, 12));      
     rectangle.drawString(label, x + (width / 2), y);      
     if (fill)        
     rectangle.fillRect(x, y, width, height);    
  }  
} 
package com.javapapers.designpattern.flyweight;     
import java.util.HashMap;     
public class ShapeFactory {   
  private static final HashMap shapes = new HashMap();       
  public static MyShape getShape(String label) {    
	 MyShape concreteShape = (MyShape) shapes.get(label);         
	 if (concreteShape == null) {      
		if (label.equals("R")) {       
		   concreteShape = new MyRectangle(label);        
		 } else if (label.equals("O")) {        
		    concreteShape = new MyOval(label);       
		 }        
		 shapes.put(label, concreteShape);      
	 }      
	 return concreteShape;   
  } 
} 
package com.javapapers.designpattern.flyweight;     
import java.awt.BorderLayout;  
import java.awt.Color;  
import java.awt.Container;  
import java.awt.Graphics;  
import java.awt.event.ActionEvent;  
import java.awt.event.ActionListener;     
import javax.swing.JButton;  
import javax.swing.JFrame;  
import javax.swing.JPanel;     
public class Client extends JFrame {     
  private static final int WIDTH = 400;    
  private static final int HEIGHT = 400;       
  private static final String shapes[] = { "R", "O" };    
  private static final Color colors[] = { Color.red, Color.green, Color.blue };    
  private static final boolean fill[] = { true, false };    
  private static final String font[] = { "Arial", "Courier" };      
  public Client() {    
	Container contentPane = getContentPane();         
	JButton startButton = new JButton("Draw Shapes");      
	final JPanel panel = new JPanel();         
	contentPane.add(panel, BorderLayout.CENTER);      
	contentPane.add(startButton, BorderLayout.SOUTH);      
	setSize(WIDTH, WIDTH);      
	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);      
	setVisible(true);         
	startButton.addActionListener(new ActionListener() {     
	   public void actionPerformed(ActionEvent event) {       
		  Graphics g = panel.getGraphics();          
			for (int i = 0; i < 100; ++i) {          
			  MyShape shape = ShapeFactory.getShape(getRandomShape());            
			  shape.draw(g, getRandomX(), getRandomY(), getRandomWidth(),                
			  getRandomHeight(), getRandomColor(),                
			  getRandomFill(), getRandomFont());          
			}       
	 }      
   });    
  }       
   private String getRandomShape() {   
     return shapes[(int) (Math.random() * shapes.length)];    
   }       
   private int getRandomX() {    
      return (int) (Math.random() * WIDTH);    
   }       
   private int getRandomY() {   
	  return (int) (Math.random() * HEIGHT);    
   }       
   private int getRandomWidth() {   
	  return (int) (Math.random() * (WIDTH / 7));    
   }       
   private int getRandomHeight() {    
	  return (int) (Math.random() * (HEIGHT / 7));   
   }       
   private Color getRandomColor() {    
	  return colors[(int) (Math.random() * colors.length)];   
   }       
   private boolean getRandomFill() {    
	  return fill[(int) (Math.random() * fill.length)];    
   }       
   private String getRandomFont() {    
	 return font[(int) (Math.random() * font.length)];    
   }       
   public static void main(String[] args) { 
     Client client = new Client();
   }
}