//收音机 class Radio { void openRadio（Battery batt...

//收音机 class Radio { void openRadio(Battery battery){ battery.electricityAmount=battery.electricityAmount-10; } } //电池 class Battery { int electricityAmount; Battery(int amount){ electricityAmount=amount; } } //用户测试新买的电池，放进收音机，打开收音机听新闻 public class A { public static void main(String args[]){ Battery nanfu=new Battery(100); System.out.println("南孚电池的储量是："+nanfu.electricityAmount); Radio radio=new Radio(); System.out.println("收音机开始使用南孚电池"); radio.openRadio(【 请填空 】); System.out.println("目前南孚电池的储量是："+nanfu.electricityAmount); } }