向上转型 大佬看下代码 看下 能不能优化下 感谢大佬
class mode
{
void Activity()
{
System.out.println("动物园里老虎,鱼,鸵鸟及青蛙的运动方式");
}
}
class tiger extends mode
{
void Activity()
{
System.out.println("老虎:陆地,我的地盘!");
}
}
class fish extends mode
{
void Activity()
{
System.out.println("鱼:我在水中游");
}
}
class ostrich extends mode
{
void Activity()
{
System.out.println("鸵鸟:天空,为啥离案那么远");
}
}
class frog extends mode
{
void Activity()
{
System.out.println("青蛙:障碍,距离上的?没事儿");
}
}
class Main
{
public static void main(String[] args)
{
mode a = new mode();
a.Activity();
mode b = new tiger();
b.Activity();
mode c = new ostrich();
c.Activity();
mode d = new fish();
d.Activity();
mode e = new frog();
e.Activity();
}
}