the extractfile method hides any file so long as there 's enough capacity in the image file in a cover image concode_field_sep int extBitsLength concode_elem_sep int sizeBitsLength concode_elem_sep int byteLength concode_field_sep int swapLsb concode_elem_sep String hideFile concode_elem_sep String extractString concode_elem_sep String hideString
String function ( String arg0 ) { }