Known Indirect Subclasses
BufferedReader,
CharArrayReader,
CharBuffer,
FileReader,
FilterReader,
InputStreamReader,
LineNumberReader,
PipedReader,
PushbackReader,
Reader,
StringReader
BufferedReader |
Reads text from a character-input stream, buffering characters so as to
provide for the efficient reading of characters, arrays, and lines. |
CharArrayReader |
This class implements a character buffer that can be used as a
character-input stream. |
CharBuffer |
A char buffer. |
FileReader |
Convenience class for reading character files. |
FilterReader |
Abstract class for reading filtered character streams. |
InputStreamReader |
An InputStreamReader is a bridge from byte streams to character streams: It
reads bytes and decodes them into characters using a specified charset . |
LineNumberReader |
A buffered character-input stream that keeps track of line numbers. |
PipedReader |
Piped character-input streams. |
PushbackReader |
A character-stream reader that allows characters to be pushed back into the
stream. |
Reader |
Abstract class for reading character streams. |
StringReader |
A character stream whose source is a string. |
|
A Readable is a source of characters. Characters from
a Readable are made available to callers of the read
method via a CharBuffer
.
Public Method Summary
abstract
int
|
read( CharBuffer cb)
Attempts to read characters into the specified character buffer.
|
Public Methods
public
abstract
int
read
(CharBuffer cb)
Attempts to read characters into the specified character buffer.
The buffer is used as a repository of characters as-is: the only
changes made are the results of a put operation. No flipping or
rewinding of the buffer is performed.
Parameters
cb |
the buffer to read characters into |
Returns
- The number of
char
values added to the buffer,
or -1 if this source of characters is at its end