package com.mahe; public class Test { public static void main(String[] args) { Player p=new Player(); Game g=new Game(p); g.start(); } } package com.mahe; public class CircleTest { public static void main(String[] args) { Circle c1=new Circle(); c1.setRadius(50); System.out.println("圆的周长为"+c1.getPerimeter()); System.out.println("圆的面积为"+c1.getArea()); } }