jdk.io.ByteArrayInputStream
A ByteArrayInputStream contains an internal buffer that contains bytes that may be read from the stream. An internal counter keeps track of the next byte to be supplied by the read method.
Closing a ByteArrayInputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.
A ByteArrayInputStream contains an internal buffer that contains bytes that may be read from the stream. An internal counter keeps track of the next byte to be supplied by the read method. Closing a ByteArrayInputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.
->byte-array-input-streamclj
(->byte-array-input-stream buf)(->byte-array-input-stream buf offset length)Constructor.
Creates ByteArrayInputStream that uses buf as its buffer array. The initial value of pos is offset and the initial value of count is the minimum of offset+length and buf.length. The buffer array is not copied. The buffer's mark is set to the specified offset.
buf - the input buffer. - byte[]
offset - the offset in the buffer of the first byte to read. - int
length - the maximum number of bytes to read from the buffer. - int
Constructor. Creates ByteArrayInputStream that uses buf as its buffer array. The initial value of pos is offset and the initial value of count is the minimum of offset+length and buf.length. The buffer array is not copied. The buffer's mark is set to the specified offset. buf - the input buffer. - `byte[]` offset - the offset in the buffer of the first byte to read. - `int` length - the maximum number of bytes to read from the buffer. - `int`
availableclj
(available this)Returns the number of remaining bytes that can be read (or skipped over) from this input stream.
The value returned is count - pos, which is the number of bytes remaining to be read from the input buffer.
returns: the number of remaining bytes that can be read (or skipped
over) from this input stream without blocking. - int
Returns the number of remaining bytes that can be read (or skipped over)
from this input stream.
The value returned is count - pos,
which is the number of bytes remaining to be read from the input buffer.
returns: the number of remaining bytes that can be read (or skipped
over) from this input stream without blocking. - `int`closeclj
(close this)Closing a ByteArrayInputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.
throws: java.io.IOException - if an I/O error occurs.
Closing a ByteArrayInputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException. throws: java.io.IOException - if an I/O error occurs.
markclj
(mark this read-ahead-limit)Set the current marked position in the stream. ByteArrayInputStream objects are marked at position zero by default when constructed. They may be marked at another position within the buffer by this method.
If no mark has been set, then the value of the mark is the offset passed to the constructor (or 0 if the offset was not supplied).
Note: The readAheadLimit for this class has no meaning.
read-ahead-limit - the maximum limit of bytes that can be read before the mark position becomes invalid. - int
Set the current marked position in the stream. ByteArrayInputStream objects are marked at position zero by default when constructed. They may be marked at another position within the buffer by this method. If no mark has been set, then the value of the mark is the offset passed to the constructor (or 0 if the offset was not supplied). Note: The readAheadLimit for this class has no meaning. read-ahead-limit - the maximum limit of bytes that can be read before the mark position becomes invalid. - `int`
mark-supportedclj
(mark-supported this)Tests if this InputStream supports mark/reset. The markSupported method of ByteArrayInputStream always returns true.
returns: true if this stream instance supports the mark
and reset methods; false otherwise. - boolean
Tests if this InputStream supports mark/reset. The
markSupported method of ByteArrayInputStream
always returns true.
returns: true if this stream instance supports the mark
and reset methods; false otherwise. - `boolean`readclj
(read this)(read this b off len)Reads up to len bytes of data into an array of bytes from this input stream. If pos equals count, then -1 is returned to indicate end of file. Otherwise, the number k of bytes read is equal to the smaller of len and count-pos. If k is positive, then bytes buf[pos] through buf[pos+k-1] are copied into b[off] through b[off+k-1] in the manner performed by System.arraycopy. The value k is added into pos and k is returned.
This read method cannot block.
b - the buffer into which the data is read. - byte[]
off - the start offset in the destination array b - int
len - the maximum number of bytes read. - int
returns: the total number of bytes read into the buffer, or
-1 if there is no more data because the end of
the stream has been reached. - int
throws: java.lang.NullPointerException - If b is null.
Reads up to len bytes of data into an array of bytes
from this input stream.
If pos equals count,
then -1 is returned to indicate
end of file. Otherwise, the number k
of bytes read is equal to the smaller of
len and count-pos.
If k is positive, then bytes
buf[pos] through buf[pos+k-1]
are copied into b[off] through
b[off+k-1] in the manner performed
by System.arraycopy. The
value k is added into pos
and k is returned.
This read method cannot block.
b - the buffer into which the data is read. - `byte[]`
off - the start offset in the destination array b - `int`
len - the maximum number of bytes read. - `int`
returns: the total number of bytes read into the buffer, or
-1 if there is no more data because the end of
the stream has been reached. - `int`
throws: java.lang.NullPointerException - If b is null.resetclj
(reset this)Resets the buffer to the marked position. The marked position is 0 unless another position was marked or an offset was specified in the constructor.
Resets the buffer to the marked position. The marked position is 0 unless another position was marked or an offset was specified in the constructor.
skipclj
(skip this n)Skips n bytes of input from this input stream. Fewer bytes might be skipped if the end of the input stream is reached. The actual number k of bytes to be skipped is equal to the smaller of n and count-pos. The value k is added into pos and k is returned.
n - the number of bytes to be skipped. - long
returns: the actual number of bytes skipped. - long
Skips n bytes of input from this input stream. Fewer bytes might be skipped if the end of the input stream is reached. The actual number k of bytes to be skipped is equal to the smaller of n and count-pos. The value k is added into pos and k is returned. n - the number of bytes to be skipped. - `long` returns: the actual number of bytes skipped. - `long`
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