package bingo.game;import java.util.Vector;import bingo.shared.PlayerRecord;class Roster {    private Vector roster;    private int nextPlayerID = 0;    Roster() {	roster = new Vector();    }    int nextPlayerID() {	return ++nextPlayerID;    }    PlayerRecord searchForPlayerWithID(int ID) {	int size = roster.size();	for (int i = 0; i < size; i ++) {	    PlayerRecord pl = (PlayerRecord)(roster.elementAt(i));	    if (pl.ID == ID)		return pl;	}	return null;    }    void addElement(PlayerRecord p, RingMaster ringMaster) {	roster.addElement(p);        if (roster.size() == 1)            ringMaster.startCountDown();	ringMaster.sendPlayerStatusMessage(p);    }    void removeAllElements() {	roster.removeAllElements();	nextPlayerID = 0;    }    int size() {	return roster.size();    }}