用鼠标点出米奇的颜色，一个java小程序，也可以当做游戏(his program opens an applet that displays instructions that tells the user
* to click the canvas to display a Mickey silhouette. The drawn object can be
* dragged around the canvas. If the cursor leaves the applet, the applet is
* cleared. When the cursor returns to the applet, the instructions are
* displayed once more)