Java regex not matching, regex looks OK -

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the following returns no matches:

string patternstr = "((19\\d{2}|20\\d{2})-([0-2]\\d{2}|3[0-5]\\d)-(([0-1]\\d|2[0-3])[0-5]\\d[0-5]\\d))"; string fullpath = afile.getabsolutepath();  // fullpath should expand this: "/home/user1/2013-023-135159_abcd_001/file.txt"  pattern p = pattern.compile(patternstr); matcher m = p.matcher(fullpath); if (m.matches()) {    system.out.println("matches found"); }

it should match date portion, 2013-023-135159. tested online , regex looks ok.

you need use:

m.find()

instead of:

m.matches()

as regex matching parts of input string not expected m.matches()

regex demo


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