Intro to IntelliJ
https://www.youtube.com/watch?v=c0efB_CKOYo
https://www.youtube.com/watch?v=S764o0mAXhg
Debugging in IntelliJ
https://www.youtube.com/watch?v=1bCgzjatcr4&t=12s
Code | Reformat Code
Commenting and uncommenting lines of code
Do one of the following:
原文：https://www.cnblogs.com/tobeabetterpig/p/9451035.html