Question

I want to save a Unique ID (which is a String) which gets created when I launch my Java application. Now I want to save this somewhere (I think in some file on the disk) so that when I relaunch my application I should be able to read it and use that ID.

I want to know what is the good way to saving such ID. I am thinking of creating a Properties file and save it then retrieve it from it when I relaunch application. Is there a better or standard way for this?

EDIT :

Additionally what should be the folder location for storing on the disk. Should it be relative to my execution path or some Logged-in user specific path?

Answer 1

1. If its the same Java application that writes or reads this String, then use Serialization, it will be in non-readable form when saved.

2. If reading and writing is from different program, then use Text file.

3. Using Property file will be also a good approach.