중첩클래스

```
ex)
A.java 파일에

public class A{

public static class B{

}
public static class C{

}

}
```

사용 이유를 찾아보자 ..!
---
[1](https://m.blog.naver.com/akilia/221980455577)
[2](https://velog.io/@hihih_dev/DesignPattern-%EC%8B%B1%EA%B8%80%ED%86%A4%ED%8C%A8%ED%84%B4)
[3](https://soonipy.tistory.com/91)
[4](https://papabee.tistory.com/16)
---