question: public String toString ( ) { StringBuffer result = new StringBuffer ( "CharClasses:" ) ; result . append ( Out . NL ) ; for ( int i = 0 ; i < classes . size ( ) ; i ++ ) result . append ( "class " + i + ":" + Out . NL + classes . elementAt ( i ) + Out . NL ) ; return result . toString ( ) ; }
target:  Return a string representation of the char classes stored in this class.  Enumerates the classes by index.