question: checks if a string is whitespace , empty '' '' or null . stringutils.isblank null = true stringutils.isblank '' '' = true stringutils.isblank '' '' = true stringutils.isblank `` bob '' = false stringutils.isblank '' bob '' = false concode_field_sep PlaceHolder placeHolder concode_field_sep boolean isEmpty concode_elem_sep String join concode_elem_sep String join
target: boolean function ( String arg0 ) { int loc0 ; if ( arg0 == null || ( loc0 = arg0 . length ( ) ) == 0 ) { return true ; } for ( int loc1 = 0 ; loc1 < loc0 ; loc1 ++ ) { if ( ! Character . isSpace ( arg0 . charAt ( loc1 ) ) ) { return false ; } } return true ; }