我有如下界面:packageexample;importjava.awt.Point;publicinterfaceThing{publicenumMovingState{MOVING_LEFT,MOVING_UP,MOVING_RIGHT,MOVING_DOWN}publicvoidsetNewPosition(MovingStatestate);publicPointgetPosition();}和一个实现类:packageexample;importjava.awt.Point;publicclassThingImplimplementsThing{publicenumMovin