windows intelliJ idea setup

If starting from scratch,

1. create a new java project with gradle
2. as of 2022, this will create a .gradle, .idea, gradle, .etc folders and files
3. just start adding java files to one of the two main or test modules

If starting from existing project, probably

1. open the folder in intellij idea
2. configure java sdk 1.8
3. set language level to 8 for project and modules