// 외환 시세를 변동시키는 메소드
public void randomForExchange() {
String code = null;
Exchange[] exchanges = wrap.getAllExchanges();
for (int i = 0; i < exchanges.length; i++) {
float buy = exchanges[i].getBuy();
float sell = exchanges[i].getSell();
float rate = exchanges[i].getRate();
int selected = (int) (Math.random() * 10);
if (selected % 2 == 1) {
buy += selected;
sell += selected;
rate += selected / 10;
code = "Exchange++";
} else {
buy -= selected;
sell -= selected;
rate -= selected / 10;
code = "Exchange--";
}
exchanges[i].setBuy(buy);
exchanges[i].setSell(sell);
exchanges[i].setRate(rate);
}
wrap.setAllExchanges(exchanges);
// 외환 시세가 변동되었음을 통보하는 객체를 생성
notice = new Notice(code);
}
