Config file

[kappsegla]

We would like to have some sort of config file for setting some parameters for the server. Example setting port number that the server should listen to.
port=8080

When starting the application the config file should be read and all key and values found should be stored in the applications memory so it can be used by other parts of the program.

Open questions are:

1. What format should we use for the config file?
2. Should it be allowed to write any key, value or only some predefined ones with default values if not specified?
3. What should happen when there are errors in parsing the file?
4. Where should the file be located, what folder?

[DarkendHall]

Here are my thoughts regarding this:

1. We could use .json or .yml since they are pretty easy to parse with the jacksson library.
2. I think it should only be allowed to write some predefined values.
3. If there is an error while parsing the file we could load some default hardcoded values.
4. The file should be located in "src/main/resources".

[Vimbayinashe]

I suggest that we use .properties file as suggested in baeldung's article as it does not require an external library and the file can be located in src/main/resources folder as @DarkendHall suggested.

At this point I cannot say exactly which key-value pairs will be required but I am sure this will become clearer over time.

[ReymartNarvaez]

I'll do as @DarkendHall suggested and use .json and start working from there.

[LordRekishi]

How is this issue coming along? I could use this for my issue #63