checks if a string is empty '' '' or null . stringutils.isempty null = true stringutils.isempty '' '' = true stringutils.isempty '' '' = false stringutils.isempty `` bob '' = false stringutils.isempty '' bob '' = false note : this method does not trim the string . that functionality is available in isblank . concode_field_sep PlaceHolder placeHolder concode_field_sep boolean isAlphanumericSpace concode_elem_sep boolean isAlpha concode_elem_sep boolean isNumeric concode_elem_sep boolean isAlphanumeric concode_elem_sep boolean isNotBlank concode_elem_sep boolean isBlank concode_elem_sep boolean isNotEmpty concode_elem_sep boolean isNumericSpace
boolean function ( final String arg0 ) { return ( arg0 == null ) || ( arg0 . length ( ) == 0 ) ; }