抽象类和接口的区别(4)

区别抽象类与接口

public class Person : ISwim

{

public void Swim()

{

//Swimming in person's style.

}

}

public class Frog : ISwim

{

public void Swim()

{

//Swimming in frog's style.

}

}

public class Fish : ISwim

{

public void Swim()

{

//Swimming in fish's style.

}

}

1. 共性大于个性

2. 共性相同的个体间必然具有相同的属性与行为

3. 相同行为的实现方式具有一定区别

abstract public class Fish

{

abstract public void Swim();

}

public class 鲫鱼 : Fish

{

public override void Swim()

{

//Swim like a 鲫鱼

}

}

public class 鲤鱼 : Fish

{

public override void Swim()

{

//Swim like a 鲤鱼

}

}

public class 金鱼 : Fish

{

public override void Swim()

{

//Swim like a 金鱼

}

}

观察在使用接口或是使用抽象基类的几条理由中，第三条理由其实是一样的，它所描述的是