question: private Object readByIndexToken ( Object current , String indexToken ) { try { int index = Integer . parseInt ( indexToken ) ; JSONArray currentArr = ( JSONArray ) current ; if ( index >= currentArr . length ( ) ) { throw new JSONPointerException ( format ( "index %d is out of bounds - the array has %d elements" , index , currentArr . length ( ) ) ) ; } return currentArr . get ( index ) ; } catch ( NumberFormatException e ) { throw new JSONPointerException ( format ( "%s is not an array index" , indexToken ) , e ) ; } }
target:  Matches a JSONArray element by ordinal position