Main.java

public class Main {
    public static void main(String[] args) {

System.out.println("Enter Text >");
 
        // create an event source - reads from stdin
        final EventSource eventSource = new EventSource();
 
        // create first observer
        final ResponseHandler1 responseHandler1 = new ResponseHandler1();
 
        // subscribe the observer to the event source
        eventSource.addObserver(responseHandler1);
        
        
        // create second observer
        final ResponseHandler2 responseHandler2 = new ResponseHandler2();
 
        // subscribe the observer to the event source
        eventSource.addObserver(responseHandler2);
 
        // starts the event thread
        Thread thread = new Thread(eventSource);
        thread.start();

    }
}