public abstract class Colleague{

private Mediator mediator;

private int colleagueCode;

public Colleague(Mediator newMediator){

mediator = newMediator;

mediator.addColleague(this);

}

public void saleOffer(String stock, int shares){

mediator.saleOffer(stock, shares, this.colleagueCode);

}

public void buyOffer(String stock, int shares){

mediator.buyOffer(stock, shares, this.colleagueCode);

}

public void setCollCode(int collCode){ colleagueCode = collCode; }

}