StringReader instead.@Deprecated public class StringBufferInputStream extends InputStream
InputStream that reads bytes from a String in
a sequential manner.| Modifier and Type | Field and Description |
|---|---|
protected String |
buffer
Deprecated.
The source string containing the data to read.
|
protected int |
count
Deprecated.
The total number of characters in the source string.
|
protected int |
pos
Deprecated.
The current position within the source string.
|
| Constructor and Description |
|---|
StringBufferInputStream(String str)
Deprecated.
Construct a new
StringBufferInputStream with str as
source. |
| Modifier and Type | Method and Description |
|---|---|
int |
available()
Deprecated.
Returns an estimated number of bytes that can be read or skipped without blocking for more
input.
|
int |
read()
Deprecated.
Reads a single byte from the source string and returns it as an integer
in the range from 0 to 255.
|
int |
read(byte[] buffer,
int byteOffset,
int byteCount)
Deprecated.
Reads up to
byteCount bytes from this stream and stores them in
the byte array buffer starting at byteOffset. |
void |
reset()
Deprecated.
Resets this stream to the beginning of the source string.
|
long |
skip(long charCount)
Deprecated.
Skips
charCount characters in the source string. |
close, mark, markSupported, nullInputStream, read, readAllBytes, readNBytes, readNBytes, transferToprotected String buffer
protected int count
protected int pos
public StringBufferInputStream(String str)
StringBufferInputStream with str as
source. The size of the stream is set to the length() of the
string.str - the source string for this stream.NullPointerException - if str is null.public int available()
InputStreamNote that this method provides such a weak guarantee that it is not very useful in practice.
Firstly, the guarantee is "without blocking for more input" rather than "without blocking": a read may still block waiting for I/O to complete — the guarantee is merely that it won't have to wait indefinitely for data to be written. The result of this method should not be used as a license to do I/O on a thread that shouldn't be blocked.
Secondly, the result is a conservative estimate and may be significantly smaller than the actual number of bytes available. In particular, an implementation that always returns 0 would be correct. In general, callers should only use this method if they'd be satisfied with treating the result as a boolean yes or no answer to the question "is there definitely data ready?".
Thirdly, the fact that a given number of bytes is "available" does not guarantee that a read or skip will actually read or skip that many bytes: they may read or skip fewer.
It is particularly important to realize that you must not use this method to
size a container and assume that you can read the entirety of the stream without needing
to resize the container. Such callers should probably write everything they read to a
ByteArrayOutputStream and convert that to a byte array. Alternatively, if you're
reading from a file, File.length() returns the current length of the file (though
assuming the file's length can't change may be incorrect, reading a file is inherently
racy).
The default implementation of this method in InputStream always returns 0.
Subclasses should override this method if they are able to indicate the number of bytes
available.
available in class InputStreampublic int read()
read in class InputStreampublic int read(byte[] buffer,
int byteOffset,
int byteCount)
InputStreambyteCount bytes from this stream and stores them in
the byte array buffer starting at byteOffset.
Returns the number of bytes actually read or -1 if the end of the stream
has been reached.read in class InputStreampublic void reset()
reset in class InputStreampublic long skip(long charCount)
charCount characters in the source string. It does nothing and
returns 0 if charCount is negative. Less than charCount characters are
skipped if the end of the source string is reached before the operation
completes.skip in class InputStream