How to read .dat files that are hidden?

Is it possible to read .dat files that are set to hidden? 'cause what i did was i created a .dat file and set its attributes to hidden and my Read file code cannot read hidden files.
here's my Read file code:
Scanner read=new Scanner(FileReader("C:\password.dat"));
and another thing, how do you Write a .dat file that is hidden too? 'cause my password.dat file needs to be updated.
here's my Write file code:
PrintWriter write=new PrintWriter("C:\password.dat");
thank for the help.

There should not be any problems opening up hidden files. Your problem is probably elsewhere (for example, you didn't escape the backslash, so what you posted is not your code).

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Message was edited by: riki1278

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