package future;

public class FutureData implements Data {
protected RealData realData=null;
protected boolean isReady=false;

public synchronized void setRealData(RealData realata){
	if(isReady){
		return;
	}
	this.realData=realata;
	isReady=true;
	//RealDataѾע룬֪ͨgetResult()
	notifyAll();
}
	@Override
	public synchronized String getResult() {
		while(!isReady){
			try {
				wait();
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		return realData.result;
	}

}