| java.lang.Object
 java.io.Reader
java.io.CharArrayReader
| CharArrayReader | | public class CharArrayReader extends Reader (Code) | | This class implements a character buffer that can be used as a
character-input stream.
author:
Herb Jellinek
version:
1.15, 02/02/00
since:
JDK1.1 |
| Field Summary | |
| protected char | buf
The character buffer. | | protected int | count
The index of the end of this buffer. | | protected int | markedPos
The position of mark in buffer. | | protected int | pos
The current buffer position. |
| Constructor Summary | |
| public | CharArrayReader(char buf)
Create an CharArrayReader from the specified array of chars. | | public | CharArrayReader(char buf, int offset, int length)
Create an CharArrayReader from the specified array of chars. |
| Method Summary | |
| public void | close()
Close the stream. | | public void | mark(int readAheadLimit)
Mark the present position in the stream. | | public boolean | markSupported()
Tell whether this stream supports the mark() operation, which it does. | | public int | read()
Read a single character. | | public int | read(char b, int off, int len)
Read characters into a portion of an array. | | public boolean | ready()
Tell whether this stream is ready to be read. | | public void | reset()
Reset the stream to the most recent mark, or to the beginning if it has
never been marked. | | public long | skip(long n)
Skip characters. |
| buf | | protected char buf(Code) | | The character buffer.
|
| count | | protected int count(Code) | | The index of the end of this buffer. There is not valid
data at or beyond this index.
|
| markedPos | | protected int markedPos(Code) | | The position of mark in buffer.
|
| pos | | protected int pos(Code) | | The current buffer position.
|
| CharArrayReader | | public CharArrayReader(char buf)(Code) | | Create an CharArrayReader from the specified array of chars.
Parameters:
buf - Input buffer (not copied) |
| CharArrayReader | | public CharArrayReader(char buf, int offset, int length)(Code) | | Create an CharArrayReader from the specified array of chars.
Parameters:
buf - Input buffer (not copied)
Parameters:
offset - Offset of the first char to read
Parameters:
length - Number of chars to read |
| close | | public void close()(Code) | | Close the stream.
|
| mark | | public void mark(int readAheadLimit) throws IOException(Code) | | Mark the present position in the stream. Subsequent calls to reset()
will reposition the stream to this point.
Parameters:
readAheadLimit - Limit on the number of characters that may beread while still preserving the mark. Becausethe stream's input comes from a character array,there is no actual limit; hence this argument isignored.
exception:
IOException - If an I/O error occurs |
| markSupported | | public boolean markSupported()(Code) | | Tell whether this stream supports the mark() operation, which it does.
|
| read | | public int read(char b, int off, int len) throws IOException(Code) | | Read characters into a portion of an array.
Parameters:
b - Destination buffer
Parameters:
off - Offset at which to start storing characters
Parameters:
len - Maximum number of characters to read The actual number of characters read, or -1 ifthe end of the stream has been reached
exception:
IOException - If an I/O error occurs |
| ready | | public boolean ready() throws IOException(Code) | | Tell whether this stream is ready to be read. Character-array readers
are always ready to be read.
exception:
IOException - If an I/O error occurs |
| reset | | public void reset() throws IOException(Code) | | Reset the stream to the most recent mark, or to the beginning if it has
never been marked.
exception:
IOException - If an I/O error occurs |
| skip | | public long skip(long n) throws IOException(Code) | | Skip characters.
Parameters:
n - The number of characters to skip The number of characters actually skipped
exception:
IOException - If an I/O error occurs |
|
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