public class ObserverExample {
	public static void main (String[] args) {
		ObservedSubject s = new ObservedSubject() ;
		Watcher o = new Watcher();
		Psychologist p = new Psychologist();
		s.addObserver( o );
		s.addObserver( p );
		for(int i=1;i<=10;i++){
			System.out.println( "Main : Do you like the number " + i +"?" );
			s.receiveValue( i );
		}
		System.out.println( "The Subject has changed " +
			o.observedChanges()
				+ " times the internal value.");
		System.out.println("The Psychologist opinion is:" + p.opinion() );
	}
}