question: public static boolean isAlphaChar ( String text , int index ) { char c = text . charAt ( index ) ; return ( c >= 'a' && c <= 'z' ) || ( c >= 'A' && c <= 'Z' ) || ( c >= '0' && c <= '9' ) ; }
target:  Checks whether the char is part of a word. <p>RFC assert a word cannot be splitted (even if the length is greater than the maximum length).