Click here to watch in Youtube : https://www.youtube.com/watch?v=Okw_XkQaXtE
Click the below Image to Enlarge
 |
| Builder Design pattern - Real Time Example |
See also:
Friday 29 November 2013
Builder Design pattern - Real Time Example [Meal Package]
Click here to watch in Youtube : https://www.youtube.com/watch?v=Okw_XkQaXtE
See also:
Builder Design pattern - Introduction
Click here to watch in Youtube : https://www.youtube.com/watch?v=hFi1ZDrFeLo
Click the below Image to Enlarge
 |
| Builder Design pattern - Introduction |
See also:
Builder Design pattern - Sequence Diagram
Click here to watch in Youtube : https://www.youtube.com/watch?v=jWvEmjSTOgI
Click the below Image to Enlarge
 |
| Builder Design pattern - Sequence Diagram |
See also:
Builder Design pattern - Class Diagram
Click here to watch in Youtube : https://www.youtube.com/watch?v=EHS4h2noiMQ
Click the below Image to Enlarge
 |
| Builder Design pattern - Class Diagram |
See also:
Builder Design pattern - keypoints
Click here to watch in Youtube : https://www.youtube.com/watch?v=glz7DVUZ9y4
Click the below Image to Enlarge
See also:
Thursday 28 November 2013
Flyweight Design pattern - Implementation
Click here to watch in Youtube : https://www.youtube.com/watch?v=SKZQx1DdA9U
Click the below Image to Enlarge
 |
| Flyweight Design pattern - Implementation |
 |
| Flyweight Design pattern - Class Diagram |
Shape.java
public interface Shape
{
void draw();
}
Circle.java
public class Circle implements Shape
{
private String color;
private final int x = 10;
private final int y = 20;
private final int radius = 30;
public Circle()
{
}
public Circle( String color )
{
this.color = color;
}
public String getColor()
{
return color;
}
public void setColor( String color )
{
this.color = color;
}
@Override
public void draw()
{
System.out.println(this+" : Circle: Draw() [Color : " + color + ", x : " + x + ", y :" + y + ", radius :"
+ radius);
}
}
ShapeFactory.java
import java.util.HashMap;
public class ShapeFactory
{
private static final HashMap<String, Shape> shapeMap = new HashMap<String, Shape>();
public static Shape getShape( String shapeType )
{
Shape shape=null;
if( shapeType.equalsIgnoreCase("circle") )
{
shape = (Circle) shapeMap.get("circle");
if( shape == null )
{
shape = new Circle();
shapeMap.put("circle", shape);
System.out.println("Creating circle object with out any color in shapefactory : " + shape
+ "\n");
}
}
return shape;
}
}
FlyweightPatternDemo.java
public class FlyweightPatternDemo
{
private static final String colors[] = { "Red", "Green", "Blue", "Orange", "Black" };
public static void main( String[] args )
{
System.out.println("\n################ Red color Circles ####################");
for( int i = 0; i < 10; ++i )
{
Circle circle = (Circle) ShapeFactory.getShape("circle");
circle.setColor(colors[0]);
circle.draw();
}
System.out.println("\n############### Green color Circles ####################");
for( int i = 0; i < 10; ++i )
{
Circle circle = (Circle) ShapeFactory.getShape("circle");
circle.setColor(colors[1]);
circle.draw();
}
System.out.println("\n################ Blue color Circles ####################");
for( int i = 0; i < 10; ++i )
{
Circle circle = (Circle) ShapeFactory.getShape("circle");
circle.setColor(colors[2]);
circle.draw();
}
System.out.println("\n################ Orange color Circles ####################");
for( int i = 0; i < 10; ++i )
{
Circle circle = (Circle) ShapeFactory.getShape("circle");
circle.setColor(colors[3]);
circle.draw();
}
System.out.println("\n################ Black color Circles ####################");
for( int i = 0; i < 10; ++i )
{
Circle circle = (Circle) ShapeFactory.getShape("circle");
circle.setColor(colors[4]);
circle.draw();
}
}
}
Output
################ Red color Circles ####################
Creating circle object with out any color in shapefactory : Circle@10385c1
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Red, x : 10, y :20, radius :30
############### Green color Circles ####################
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Green, x : 10, y :20, radius :30
################ Blue color Circles ####################
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Blue, x : 10, y :20, radius :30
################ Orange color Circles ####################
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Orange, x : 10, y :20, radius :30
################ Black color Circles ####################
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Circle@10385c1 : Circle: Draw() [Color : Black, x : 10, y :20, radius :30
Sunday 24 November 2013
Memento Design pattern - Implementation
Click here to watch in Youtube : https://www.youtube.com/watch?v=ZjouanHQmdk
Click the below Image to Enlarge
 |
| Memento Design pattern - Implementation |
 |
| Memento Design pattern - Class Diagram |
LedTV.java
public class LedTV
{
private String size;
private String price;
private boolean usbSupport;
public LedTV( String size, String price, boolean usbSupport )
{
super();
this.size = size;
this.price = price;
this.usbSupport = usbSupport;
}
public String getSize()
{
return size;
}
public void setSize( String size )
{
this.size = size;
}
public String getPrice()
{
return price;
}
public void setPrice( String price )
{
this.price = price;
}
public boolean isUsbSupport()
{
return usbSupport;
}
public void setUsbSupport( boolean usbSupport )
{
this.usbSupport = usbSupport;
}
@Override
public String toString()
{
return "LedTV [size=" + size + ", price=" + price + ", usbSupport=" + usbSupport + "]";
}
}
Memento.java
public class Memento
{
private LedTV ledTV;
public Memento( LedTV ledTV )
{
super();
this.ledTV = ledTV;
}
public LedTV getLedTV()
{
return ledTV;
}
public void setLedTV( LedTV ledTV )
{
this.ledTV = ledTV;
}
@Override
public String toString()
{
return "Memento [ledTV=" + ledTV + "]";
}
}
Caretaker.java
import java.util.ArrayList;
import java.util.List;
/*
* Store Room
*/
public class Caretaker
{
private List<Memento> ledTvList = new ArrayList<Memento>();
public void addMemento( Memento m )
{
ledTvList.add(m);
System.out.println("LED TV's snapshots Maintained by CareTaker :" + ledTvList);
}
public Memento getMemento( int index )
{
return ledTvList.get(index);
}
}
Originator.java
/*
* Hall
*/
public class Originator
{
LedTV ledTV;
public LedTV getLedTV()
{
return ledTV;
}
public void setLedTV( LedTV ledTV )
{
this.ledTV = ledTV;
}
public Memento createMemento()
{
return new Memento(ledTV);
}
public void setMemento( Memento memento )
{
ledTV = memento.getLedTV();
}
@Override
public String toString()
{
return "Originator [ledTV=" + ledTV + "]";
}
}
MementoClient.java
public class MementoClient
{
public static void main( String[] args )
{
Originator originator = new Originator();
originator.setLedTV(new LedTV("42 inch", "60000Rs", false));
Caretaker caretaker = new Caretaker();
caretaker.addMemento(originator.createMemento());
originator.setLedTV(new LedTV("46 inch", "80000Rs", true));
caretaker.addMemento(originator.createMemento());
originator.setLedTV(new LedTV("50 inch", "100000Rs", true));
System.out.println("\nOrignator current state : " + originator);
System.out.println("\nOriginator restoring to 42 inch LED TV...");
originator.setMemento(caretaker.getMemento(0));
System.out.println("\nOrignator current state : " + originator);
}
}
Output
LED TV's snapshots Maintained by CareTaker :[Memento [ledTV=LedTV [size=42 inch, price=60000Rs, usbSupport=false]]]
LED TV's snapshots Maintained by CareTaker :[Memento [ledTV=LedTV [size=42 inch, price=60000Rs, usbSupport=false]], Memento [ledTV=LedTV [size=46 inch, price=80000Rs, usbSupport=true]]]
Orignator current state : Originator [ledTV=LedTV [size=50 inch, price=100000Rs, usbSupport=true]]
Originator restoring to 42 inch LED TV...
Orignator current state : Originator [ledTV=LedTV [size=42 inch, price=60000Rs, usbSupport=false]]
Proxy Design pattern - Implementation[Virtual Proxy]
Click here to watch in Youtube : https://www.youtube.com/watch?v=ooPPd_LIkzQ
Click the below Image to Enlarge
 |
| Virtual Proxy |
 |
| Virtual Proxy - Class Diagram |
Image.java
interface Image
{
public void displayImage();
}
RealImage.java
//on System A
class RealImage implements Image
{
private String filename = null;
/**
* Constructor
*
* @param FILENAME
*/
public RealImage( final String FILENAME )
{
filename = FILENAME;
loadImageFromDisk();
}
/**
* Loads the image from the disk
*/
private void loadImageFromDisk()
{
System.out.println(" Loading " + filename);
}
/**
* Displays the image
*/
public void displayImage()
{
System.out.println(" Displaying " + filename+"\n");
}
}
ProxyImage.java
//on System B
class ProxyImage implements Image
{
private RealImage image = null;
private String filename = null;
/**
* Constructor
*
* @param FILENAME
*/
public ProxyImage( final String FILENAME )
{
filename = FILENAME;
}
/**
* Displays the image
*/
public void displayImage()
{
if( image == null )
{
image = new RealImage(filename);
}
image.displayImage();
}
}
Client.java
class Client
{
/**
* Test method
*/
public static void main( String[] args )
{
final Image IMAGE1 = new ProxyImage("HiResolution_100MB_Dog Photo");
final Image IMAGE2 = new ProxyImage("HiResolution_100MB_Lion photo");
System.out.println("IMAGE1["+IMAGE1+"] calling displayImage first time :");
IMAGE1.displayImage(); // loading necessary
System.out.println("IMAGE1["+IMAGE1+"] calling displayImage second time :");
IMAGE1.displayImage(); // loading unnecessary
System.out.println("IMAGE1["+IMAGE1+"] calling displayImage third time :");
IMAGE1.displayImage(); // loading unnecessary
System.out.println("###############################################################\n");
System.out.println("IMAGE2["+IMAGE2+"] calling displayImage first time :");
IMAGE2.displayImage(); // loading necessary
System.out.println("IMAGE2["+IMAGE2+"] calling displayImage second time :");
IMAGE2.displayImage(); // loading unnecessary
}
}
Output
IMAGE1[ProxyImage@1ad086a] calling displayImage first time :
Loading HiResolution_100MB_Dog Photo
Displaying HiResolution_100MB_Dog Photo
IMAGE1[ProxyImage@1ad086a] calling displayImage second time :
Displaying HiResolution_100MB_Dog Photo
IMAGE1[ProxyImage@1ad086a] calling displayImage third time :
Displaying HiResolution_100MB_Dog Photo
###############################################################
IMAGE2[ProxyImage@42719c] calling displayImage first time :
Loading HiResolution_100MB_Lion photo
Displaying HiResolution_100MB_Lion photo
IMAGE2[ProxyImage@42719c] calling displayImage second time :
Displaying HiResolution_100MB_Lion photo
See also:
Friday 22 November 2013
Flyweight Design pattern - Sequence Diagram
Click here to watch in Youtube : https://www.youtube.com/watch?v=3WAXOUm_WEc
Click the below Image to Enlarge
 |
| Flyweight Design pattern - Sequence Diagram |
See also:
Flyweight Design pattern - Class Diagram
Click here to watch in Youtube : https://www.youtube.com/watch?v=WjBsuNfIoOY
Click the below Image to Enlarge
 |
| Flyweight Design pattern - Class Diagram |
See also:
Flyweight Design pattern - Keypoints
Click here to watch in Youtube : https://www.youtube.com/watch?v=Ht-ieqGMKBk
Click the below Image to Enlarge
See also:
Flyweight Design pattern - Real Time Example
Click here to watch in Youtube : https://www.youtube.com/watch?v=y2Qpu4c-wN4
Click the below Image to Enlarge
 |
| Flyweight Design pattern - Real Time Example |
See also:
Flyweight Design pattern - Introduction
Click here to watch in Youtube : https://www.youtube.com/watch?v=lY3ilaxi-7o
Click the below Image to Enlarge
 |
| Flyweight Design pattern - Introduction |
See also:
Proxy Design pattern - Implementation [Remote Proxy]
Click here to watch in Youtube : https://www.youtube.com/watch?v=i2PT-laGv2s
Click the below Image to Enlarge
 |
| Proxy Design pattern - Implementation [Remote Proxy] |
See also:
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