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notes/设计模式 - 中介者.md
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- Mediator：中介者，定义一个接口用于与各同事（Colleague）对象通信。
- Colleague：同事，相关对象
<div align="center"> <img src="pics/30d6e95c-2e3c-4d32-bf4f-68128a70bc05.png"/> </div><br>
<div align="center"> <img src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/30d6e95c-2e3c-4d32-bf4f-68128a70bc05.png"/> </div><br>
### Implementation
Alarm（闹钟）、CoffeePot（咖啡壶）、Calendar（日历）、Sprinkler（喷头）是一组相关的对象，在某个对象的事件产生时需要去操作其它对象，形成了下面这种依赖结构：
<div align="center"> <img src="pics/82cfda3b-b53b-4c89-9fdb-26dd2db0cd02.jpg"/> </div><br>
<div align="center"> <img src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/82cfda3b-b53b-4c89-9fdb-26dd2db0cd02.jpg"/> </div><br>
使用中介者模式可以将复杂的依赖结构变成星形结构：
<div align="center"> <img src="pics/5359cbf5-5a79-4874-9b17-f23c53c2cb80.jpg"/> </div><br>
<div align="center"> <img src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/5359cbf5-5a79-4874-9b17-f23c53c2cb80.jpg"/> </div><br>
```java
public abstract class Colleague {