 Known Indirect Subclasses
AlteredCharSequence,
CharBuffer,
Editable,
GetChars,
Spannable,
SpannableString,
SpannableStringBuilder,
Spanned,
SpannedString,
String,
StringBuffer,
StringBuilder
| AlteredCharSequence |
An AlteredCharSequence is a CharSequence that is largely mirrored from
another CharSequence, except that a specified range of characters are
mirrored from a different char array instead. |
| CharBuffer |
A buffer of chars. |
| Editable |
This is the interface for text whose content and markup
can be changed (as opposed
to immutable text like Strings). |
| GetChars |
Please implement this interface if your CharSequence has a
getChars() method like the one in String that is faster than
calling charAt() multiple times. |
| Spannable |
This is the interface for text to which markup objects can be
attached and detached. |
| SpannableString |
This is the class for text whose content is immutable but to which
markup objects can be attached and detached. |
| SpannableStringBuilder |
This is the class for text whose content and markup can both be changed. |
| Spanned |
This is the interface for text that has markup objects attached to
ranges of it. |
| SpannedString |
This is the class for text whose content and markup are immutable. |
| String |
An immutable sequence of characters/code units (chars). |
| StringBuffer |
StringBuffer is a variable size contiguous indexable array of characters. |
| StringBuilder |
A modifiable sequence of characters for use in creating
and modifying Strings. |
|
Class Overview
This interface represents an ordered set of characters and defines the
methods to probe them.
Summary
| Public Methods |
|---|
|
abstract
char
|
charAt(int index)
Returns the character at the specified index, with the first character
having index zero.
|
|
abstract
int
|
length()
Returns the number of characters in this sequence.
|
|
abstract
CharSequence
|
subSequence(int start, int end)
Returns a CharSequence from the start index (inclusive)
to the end index (exclusive) of this sequence.
|
|
abstract
String
|
toString()
Returns a string with the same characters in the same order as in this
sequence.
|
Public Methods
public
abstract
char
charAt
(int index)
Returns the character at the specified index, with the first character
having index zero.
Parameters
| index
| the index of the character to return. |
public
abstract
int
length
()
Returns the number of characters in this sequence.
Returns
- the number of characters.
public
abstract
CharSequence
subSequence
(int start, int end)
Returns a CharSequence from the start index (inclusive)
to the end index (exclusive) of this sequence.
Parameters
| start
| the start offset of the sub-sequence. It is inclusive, that
is, the index of the first character that is included in the
sub-sequence. |
| end
| the end offset of the sub-sequence. It is exclusive, that is,
the index of the first character after those that are included
in the sub-sequence |
Returns
- the requested sub-sequence.
Throws
| IndexOutOfBoundsException
| if start < 0, end < 0, start > end,
or if start or end are greater than the
length of this sequence. |
public
abstract
String
toString
()
Returns a string with the same characters in the same order as in this
sequence.
Returns
- a string based on this sequence.
