makes an http head request to retrieve the last modified date of the given url . if the file : / / protocol is specified , then the lasttimestamp of the file is returned . concode_field_sep int MAX_REDIRECT_ATTEMPTS concode_elem_sep String HEAD concode_elem_sep String GET concode_elem_sep Logger LOGGER concode_field_sep void checkForCommonExceptionTypes concode_elem_sep String determineHttpMethod concode_elem_sep boolean isQuickQuery concode_elem_sep void fetchFile concode_elem_sep void fetchFile
long function ( URL arg0 ) { return getLastModified ( arg0 , false ) ; }