package push;import feedback.Feedback;import java.io.*;import java.util.*;import javax.servlet.*;import javax.servlet.http.*;/** * Selects winner  * * @version 1.0 * @since 1.0 * @see Runnable */public final class Winner implements Runnable {    private final PushInitiator pusher;    private final String winnerUrl;    private final String addressType;    /**     * Creates a new <code>Winner</code> instance.     *     * @param pusher a <code>PushInitiator</code> value     * @param winnerUrl a <code>String</code> value     */    public Winner(PushInitiator pusher, String winnerUrl, String addressType) {	this.pusher = pusher;	this.winnerUrl = winnerUrl;	this.addressType = addressType;    }    /**     * A checker thread selects a winner from the users that has returned feedback. A winner (if any) is selected      * during every cycle (of the while loop).      */    public void run() {	String message = PushInitiator.createSiMessage(winnerUrl,  null, null, null, 						       null, "You are lucky! Check the message");	while(true){	    try {		Vector users = User.getUsersOnline();		for(int i=0; i<users.size(); i++) {		    User user = (User)users.get(i);		    String name = user.getName();		    if (Feedback.winner().equals(name)) {			String address = user.getAddress(addressType);			if(address != null && !address.trim().equals("")) {			    try {				pusher.sendPushMessage(address, addressType, message, PushService.SI_CONTENT_TYPE);			    } catch(Exception ee) {}			}		    }		}	    }	    catch(Exception e) { System.err.println(e); }	    try {		Thread.sleep(120000); // 2 min	    }	    catch(InterruptedException e){}	}    }}