- 자바 버전 변경
> Project Structure창 (SHIFT+CTRL+ALT+S)
>  - Project - SDK:
>  - Project - Language Level:
>  - Module - Language Level:
>  - SDKs - (List에서 JDK 버전 선택)

- Maven
>Settings  → Build, Ex.., Dep...  → Build Tools - Maven (Ctrl + Alt + S)
	- User settings file:

- Encoding
> Settings  → Editor  → File Encodings (Ctrl + Alt + S)
	- Global Encoding
	- Project Encoding
	- Default encoding for properties files