Idea tips-格式化

Use Code | Reformat Code to reformat code according to your code
style preferences (File | Settings | Code Style).
You can also useCode | Optimize Imports to automatically optimize
imports (remove unused imports, etc.). To access the corresponding
settings, use File | Settings | Code Style | Imports.

Code | Reformat 可以根据你的代码样式参数设置(File | Settings | Code
Style)重新格式化代码.
你也可以用 Code | Optimize Imports 来自动调整 imports ,(例如 移除不用的
imports). 相关设置在 File | Settings | Code Style | Imports 中.