question: 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 changed in lang version 2.0 . it no longer trims the string . that functionality is available in isblank . concode_field_sep PlaceHolder placeHolder concode_field_sep String trim concode_elem_sep boolean equals concode_elem_sep String removeEnd concode_elem_sep String removeStart concode_elem_sep boolean equalsIgnoreCase
target: boolean function ( String arg0 ) { return arg0 == null || arg0 . length ( ) == 0 ; }