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Checking for a Character in String

I have file names in a folder like:
00001.tif, 00002.tif, MS001.tif, AX002.tif etc

I am reading files names using File API...what I want is I want to check if there is any alphabet in file name...
is there any straight forward method on String or String buffer to check that.

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Typo:

is there=if there

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Given no numbers in the extension, you could do

boolean valid = fileName.matches("\\d+\\.\\D+");

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>> if there is any alphabet in file name

if (Pattern.matches("[^.]*[A-Za-z].*", filename))

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Nguyen Huu Phuoc

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boolean valid = fileName.matches("[\\d.]+\\w+");

What's the reason, GranMod?