|Modifier and Type||Method and Description|
Gets the headers.
Reads the next byte of data from the input stream.
Reads up to
available, close, mark, markSupported, read, reset, skip
public int read() throws IOException
intin the range
255. If no byte is available because the end of the stream has been reached, the value
-1is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.
A subclass must provide an implementation of this method.
public int read(byte b, int off, int len) throws IOException
lenbytes of data from the input stream into an array of bytes. An attempt is made to read as many as
lenbytes, but a smaller number may be read. The number of bytes actually read is returned as an integer.
This method blocks until input data is available, end of file is detected, or an exception is thrown.
len is zero, then no bytes are read and
0 is returned; otherwise,
there is an attempt to read at least one byte. If no byte is available because the stream is at
end of file, the value
-1 is returned; otherwise, at least one byte is read and
The first byte read is stored into element
b[off], the next one into
b[off+1], and so on. The number of bytes read is, at most, equal to
len. Let k be the number of bytes actually read; these bytes will be stored
In every case, elements
b[off] and elements
b[b.length-1] are unaffected.
len) method for class
InputStream simply calls the method
read() repeatedly. If the first
such call results in an
IOException, that exception is returned from the call to the
len) method. If any subsequent call to
read() results in a
IOException, the exception is caught and treated as
if it were end of file; the bytes read up to that point are stored into
b and the
number of bytes read before the exception occurred is returned. The default implementation of
this method blocks until the requested amount of input data
len has been read, end
of file is detected, or an exception is thrown. Subclasses are encouraged to provide a more
efficient implementation of this method.
b- the buffer into which the data is read.
off- the start offset in array
bat which the data is written.
len- the maximum number of bytes to read.
-1if there is no more data because the end of the stream has been reached.
IOException- If the first byte cannot be read for any reason other than end of file, or if the input stream has been closed, or if some other I/O error occurs.