public class OnlineBroker extends Broker { protected double platformFee; protected String platformName; public OnlineBroker(String name, int age, double money, double provision, int clientCount, double platformFee, String platformName) { super(name, age, money, provision, clientCount); this.platformFee = platformFee; this.platformName = platformName; } public void gebuehrErheben(Trader trader) { trader.geldAuszahlen(this.platformFee); this.money += this.platformFee; } public void neueKundenAkquirieren(int amt) { this.clientCount += amt; } }