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Préférences
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JavaTM 2 Platform Std. Ed. v1.6.0
java.io
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Field Summary | |
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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 |
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lock |
Constructor Summary | |
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CharArrayReader(char[] buf)
Creates a CharArrayReader from the specified array of chars. |
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CharArrayReader(char[] buf,
int offset,
int length)
Creates a CharArrayReader from the specified array of chars. |
Method Summary | |
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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 |
markSupported()
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 |
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read, read |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected char[] buf
protected int pos
protected int markedPos
protected int count
Constructor Detail |
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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 read
IllegalArgumentException
- If offset is negative or greater than
buf.length, or if length is negative, or if
the sum of these two values is negative.Method Detail |
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public int read() throws IOException
IOException
- If an I/O error occurspublic int read(char[] b, int off, int len) throws IOException
b
- Destination bufferoff
- Offset at which to start storing characterslen
- Maximum number of characters to read
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 Reader
superclass throws
an exception in this case. If n
is negative, then
this method does nothing and returns 0
.
n
- The number of characters to skip
IOException
- If the stream is closed, or an I/O error occurspublic boolean ready() throws IOException
IOException
- If an I/O error occurspublic boolean markSupported()
markSupported
in class Reader
public void mark(int readAheadLimit) throws IOException
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 void reset() throws IOException
IOException
- If an I/O error occurspublic void close()