subSequence abstract method
Returns a String that is a subsequence of this sequence.
The subsequence starts with the char value at the specified index and
ends with the char value at index end - 1. The length
(in chars) of the
returned sequence is end - start, so if start == end
then an empty sequence is returned.
@param start the start index, inclusive @param end the end index, exclusive
@return the specified subsequence
@throws IndexOutOfBoundsException
if start or end are negative,
if end is greater than length(),
or if start is greater than end
@throws IllegalArgumentException
if a value in the range start - end is an ECI (isECI)
Implementation
String subSequence(int start, int end);