import java.awt.Component;
import java.awt.Image;
import java.awt.MediaTracker;

public class Util {
    public static void waitForImage(Component component, 
                                    Image image) {
        MediaTracker tracker = new MediaTracker(component);
        try {
            tracker.addImage(image, 0);
            tracker.waitForID(0);
        }
        catch(InterruptedException e) { e.printStackTrace(); }
    }
}