资 源 简 介
基类Light,成员属性:瓦(int),壮态(开关,boolean)。
子类TubeLight,成员属性:瓦(int),壮态(开关,boolean),长度(int)
print出来 -Base class Light, members of the property: W (int), Zhuang-state (switch, boolean). Subclass TubeLight, members of the property: W (int), Zhuang-state (switch, boolean), length (int) print out