Metadata and System.getProperty()

I am developing an arithmetic game, and I realize that, in order to go further with this game (and do it "for real"), I would need to "hide" the files from where someone could accidentally delete them (and mess up either the program itself or the data for this second stage of the beta-test). I came across a really good article on files that are actually hidden, http://stackoverflow.com/questions/2875280/modify-a-hidden-file-in-java , and realize that just simply hiding the files isn't going to stop someone who has made hidden files visible. So, according to that article, I will just make folder for it in AppData folder. I realize that Windows XP and Windows Vista/7/8 have two different names for this folder (AppData is the name for the latter). I am assuming that, of course, the name to the actual folder is inconsequential.

What I really need help on is that I know that

System.getProperty(String)

returns String (and so does

System.getProperty(String, String)

. I also know that you could get the home directory with

System.getProperty("user.home");

, and according to the aforementioned article, I could use

File workingDir = new File(System.getProperty("user.home"), "AppData/MyProgramsData");[code], but would that essentially just be the same as [code]File workingDir = new File(System.getProperty("user.home") + "/AppData/MyProgramsData")

?