public void setPosition(int x, int y) {
   jFrame.setLocation(x, y);
 }
 public void offsetPosition(int dx, int dy) {
   Point p = jFrame.getLocation();
   jFrame.setLocation(p.x + dx, p.y + dy);
 }
 public void setLocation(Point loc) {
   jFrame.setLocation(loc);
 }