What are the naming conventions for property names defined in properties files in Java? Can I use uppercase or only lowercase?
For example: bankAccountNumber or bank.acc
There is no standard convention for naming properties in property file.
Ref: https://en.wikipedia.org/wiki/.properties
As you are Java user, you can use camelCase.
For the given example, the name can be bankAccountNumber.
In case, if the requirement is to follow the hierarchy structure, dots can be used as below.