Validate a file name on Windows

Question

public static boolean isValidName(String text)
{
    Pattern pattern = Pattern.compile(\"^[^/./\\\\:*?\\\"<>|]+$\");
    Matcher matcher = pattern.matcher(text         


        

Answer 1

Not enough,in Windows and DOS, some words might also be reserved and can not be used as filenames.

CON, PRN, AUX, CLOCK$, NUL
COM0, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9
LPT0, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, and LPT9.

See~

http://en.wikipedia.org/wiki/Filename

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Edit：

Windows usually limits file names to 260 characters. But the file name must actually be shorter than that, since the complete path (such as C:\Program Files\filename.txt) is included in this character count.

This is why you might occasionally encounter an error when copying a file with a very long file name to a location that has a longer path than its current location.