https://blog.youkuaiyun.com/RunningBosszh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/RunningBoss/article/details/4760310https://blog.youkuaiyun.com/RunningBoss/article/details/4760310RunningBossTue, 03 Nov 2009 09:31:00 +0800 接口,主要用来定制一个规范,只提供方法的定义,而不提供对方法的实现.
换句话说:就是只告诉你大概要做什么,但是不告诉你具体怎么去做.这样的话你就有很大的扩张空间.
比如说一个接口,里面提供了一个画画的方法,接口只告诉你要画画,但是没要求你要画什么图形,所以你可以画三角形,也可以画正方形.
这就是所谓的程序的灵活性.这一点要自己慢慢体会啦~~~
interface 图形
{
  public void 画画();
}
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