| |||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
public class CharArrayReader extends Reader
This class implements a character buffer that can be used as a character-input stream.
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. |
Fields inherited from class java.io.Reader |
---|
lock |
Constructor Summary | |
---|---|
CharArrayReader(char[] buf) Creates a CharArrayReader from the specified array of chars. |
|
CharArrayReader(char[] buf, int offset, int length) Creates a CharArrayReader from the specified array of chars. |
Method Summary | |
---|---|
void |
close() Closes the stream and releases any system resources associated with it. |
void |
mark(int readAheadLimit) Marks the present position in the stream. |
boolean |
Tells whether this stream supports the mark() operation, which it does. |
int |
read() Reads a single character. |
int |
read(char[] b, int off, int len) Reads characters into a portion of an array. |
boolean |
ready() Tells whether this stream is ready to be read. |
void |
reset() Resets the stream to the most recent mark, or to the beginning if it has never been marked. |
long |
skip(long n) Skips characters. |
Methods inherited from class java.io.Reader |
---|
close, mark, markSupported, read, read, read, read, ready, reset, skip |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
protected char[] buf
protected int count
protected int markedPos
protected int pos
Constructor Detail |
---|
public CharArrayReader(char[] buf)
buf
- Input buffer (not copied)public CharArrayReader(char[] buf, int offset, int length)
The resulting reader will start reading at the given offset. The total number of char values that can be read from this reader will be either length or buf.length-offset, whichever is smaller.
buf
- Input buffer (not copied)offset
- Offset of the first char to readlength
- Number of chars to readMethod Detail |
---|
public void close()
close
in class Reader
public void mark(int readAheadLimit) throws IOException
mark
in class Reader
readAheadLimit
- Limit on the number of characters that may be
read while still preserving the mark. Because
the stream's input comes from a character array,
there is no actual limit; hence this argument is
ignored.IOException
- If an I/O error occurspublic boolean markSupported()
markSupported
in class Reader
public int read() throws IOException
read
in class Reader
IOException
- If an I/O error occurspublic int read(char[] b, int off, int len) throws IOException
read
in class Reader
b
- Destination bufferoff
- Offset at which to start storing characterslen
- Maximum number of characters to readIOException
- If an I/O error occurspublic boolean ready() throws IOException
ready
in class Reader
IOException
- If an I/O error occurspublic void reset() throws IOException
reset
in class Reader
IOException
- If an I/O error occurspublic long skip(long n) throws IOException
The n
parameter may be negative, even though the
skip
method of the {@link Reader} superclass throws
an exception in this case. If n
is negative, then
this method does nothing and returns 0
.
skip
in class Reader
n
- The number of characters to skipIOException
- If the stream is closed, or an I/O error occurs
| |||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |