多态(二)

class Cat extends Animal
{
	public void eat()
	{
		System.out.println("吃鱼");
	}
	public void catchMouse()
	{
		System.out.println("抓老鼠");
	}
}


class Dog extends Animal
{
	public void eat()
	{
		System.out.println("吃骨头");
	}
	public void kanJia()
	{
		System.out.println("看家");
	}
}


class Pig extends Animal
{
	public void eat()
	{
		System.out.println("饲料");
	}
	public void gongDi()
	{
		System.out.println("拱地");
	}
}