|Known Indirect Subclasses|
A CharSequence is a readable sequence of
char values. This
interface provides uniform, read-only access to many different kinds of
char value represents a character in the Basic
Multilingual Plane (BMP) or a surrogate. Refer to Unicode Character Representation for details.
This interface does not refine the general contracts of the
hashCode methods. The result of comparing two
objects that implement CharSequence is therefore, in general,
undefined. Each object may be implemented by a different class, and there
is no guarantee that each class will be capable of testing its instances
for equality with those of the other. It is therefore inappropriate to use
arbitrary CharSequence instances as elements in a set or as keys in
Returns the length of this character sequence.
Returns a new
Returns a string containing the characters in this sequence in the same order as this sequence.
char value at the specified index. An index ranges from zero
to length() - 1. The first
char value of the sequence is at
index zero, the next at index one, and so on, as for array
char value specified by the index is a
surrogate, the surrogate
value is returned.
|index||the index of the
|IndexOutOfBoundsException||if the index argument is negative or not less than length()|
Returns the length of this character sequence. The length is the number
chars in the sequence.
chars in this sequence
Returns a new
CharSequence 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
chars) of the
returned sequence is end - start, so if start == end
then an empty sequence is returned.
|start||the start index, inclusive|
|end||the end index, exclusive|
|IndexOutOfBoundsException||if start or end are negative, if end is greater than length(), or if start is greater than end|
Returns a string containing the characters in this sequence in the same order as this sequence. The length of the string will be the length of this sequence.