IDEA hides the .iml file of the project in the idea folder

Open settings: Ctrl + Alt + s or menu File > Settings

Open setting, Editor–>File Types. Add ".idea;.mvn;" to Ignore files and folders

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Additionally .gitignore file commit ignores the contents of the file

HELP.md
target/
!.mvn/wrapper/maven-wrapper.jar
!/src/main//target/
!/src/test//target/

STS

.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache

I understand the idea

.idea
*.iws
*.iml
*.ipr

NetBeans

/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
build/
!/src/main//build/
!/src/test//build/

VS Code

.vscode/