{

public static void main( String[] args )

{

Product samsungLEDTV = new Product("Samsung LED TV", "LED TV","60000Rs", "Not available");

//Person david object will be created and person david object will be registered to the subject

Person david = new Person("David",samsungLEDTV);

//Person john object will be created and person john object will be registered to the subject

Person john = new Person("John",samsungLEDTV);

ArrayList<Observer> subscribers= samsungLEDTV.getObservers();

System.out.println("subscribers List : "+ subscribers);

for( Iterator<Observer> iterator = subscribers.iterator(); iterator.hasNext(); )

{

Person person = (Person) iterator.next();

System.out.println("This person has subscribed : " + person.getPersonName());

}

System.out.println();

System.out.println("SamsungLED TV current state : "+samsungLEDTV.getAvailability());

System.out.println();

// Now product is available

samsungLEDTV.setAvailability("Available");

}