Writing to hidden file

Question

I created a text document in a folder and made it hidden (using file properties).
This also seems to have made it read-only, but in the file properties, the read-only checkbox is not checked.
Is there a different procedure for writing to a hidden file, or does Java consider it to be read-only?
String path = "d:\\temp\\hidden.txt";
// Stream to write file
FileOutputStream fout;          
try
    // Open an output stream
    fout = new FileOutputStream (path);
    // Print a line of text
    new PrintStream(fout).println ("hello world!");
    // Close our output stream
    fout.close();          
// Catches any error conditions
catch (IOException e)
     System.err.println ("Unable to write to file");
     e.printStackTrace();
     System.exit(-1);
}And here is the stack trace:
Unable to write to file
java.io.FileNotFoundException: d:\temp\hidden.txt (Access is denied)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(Unknown Source)
at java.io.FileOutputStream.<init>(Unknown Source)
at Test.<init>(Test.java:24)
at Test.main(Test.java:59)
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Answer 1

Is it only hidden, or also write-protected and/or a
system file?So Java does not have access to all files on a computer then (as mentioned in other treads)? Or does it have read-access to all files?