There are a lot of naming choices available, and many companies/projects have set their standards, holding their conventions over and above others.

In this article, we will look at the most popular naming conventions

[1] The flat case, also called the lazy case

all words written continuous in lowercase with no spaces or special characters example: packagename

• usage in Java Package names

[2] Upper Flat case

all words written continuous in uppercase with no spaces or special characters example: CONSTANT

• use in C / Java constants

[3] Lower camel case, also called dromedary case

starts with lowercase and every subsequent word starts with Uppercase letter; written continuous with no spaces or special characters example: camelCase

• usage in Java variables

[4] Upper Camel Case, also called Pascal Case or Studly Caps

starts with uppercase and every subsequent word starts with Uppercase letter; written continuous with no spaces or special characters example: UpperCamelCase

• usage in .Net Identifiers

[5] Snake Case, also called Pothole case

starts with lowercase and every subsequent word starts with lowercase; each word is separated by underscore _ example: simple_variable

• usage in Python variables

[6] Screaming Snake Case

all words in uppercase separated by underscore _ similar to snake case example: SCREAMING_VARIABLE

• usage in multi-word C / Java Constants (static final or enumerations)

[7] Kebab Case, also called Caterpillar case/dash case/lisp case or param case

all words written in lowercase strung together with hypen - example: simple-kebab-variable

• usage in Lisp Programming Language

[8] Upper Kebab Case, also called Train case or Cobol Case

all words written in uppercase strung together with hypen - example: TRAIN-CASE

• usage in Cobol Programming Language

And that's it! Use the above conventions for a more readable code structure and improve your code quality.

Thanks for reading!