package bingo.game;import bingo.shared.*;class BallAnnouncer extends Thread {    private RingMaster ringMaster;    BallAnnouncer(RingMaster ringMaster) {        super("Bingo Ball Announcer");	this.ringMaster = ringMaster;    }    public synchronized void run() {        BagOfBalls bagOfBalls = (BagOfBalls)(new RandomBag());        while (ringMaster.gameInProgress()) {	    if (!ringMaster.isCheckingForWinner()) {	        try {		    ringMaster.announceBall(bagOfBalls.getNext());	        } catch (NoMoreBallsException e) {		    ringMaster.setGameOver();	        }	    }	    try {		wait(ringMaster.getGameParameters().getDelay());	    } catch (InterruptedException e) { }        }    }}