StringBufferInputStream

public class StringBufferInputStream extends InputStream

This class is deprecated.
This class does not properly convert characters into bytes. As of JDK 1.1, the preferred way to create a stream from a string is via the StringReader class.

This class allows an application to create an input stream in which the bytes read are supplied by the contents of a string. Applications can also read bytes from a byte array by using a ByteArrayInputStream.

Only the low eight bits of each character in the string are used by this class.

See Also

• ByteArrayInputStream
• StringReader

Field Summary

protected String	buffer	The string from which bytes are read.
protected int	count	The number of valid characters in the input stream buffer.
protected int	pos	The index of the next character to read from the input stream buffer.

Public Constructor Summary

StringBufferInputStream(String s) Creates a string input stream to read data from the specified string.

Public Method Summary

synchronized int	available() Returns the number of bytes that can be read from the input stream without blocking.
synchronized int	read() Reads the next byte of data from this input stream.
synchronized int	read(byte[] b, int off, int len) Reads up to len bytes of data from this input stream into an array of bytes.
synchronized void	reset() Resets the input stream to begin reading from the first character of this input stream's underlying buffer.
synchronized long	skip(long n) Skips n bytes of input from this input stream.

Inherited Method Summary

From class java.io.InputStream

int	available() Returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking by the next invocation of a method for this input stream.
void	close() Closes this input stream and releases any system resources associated with the stream.
synchronized void	mark(int readlimit) Marks the current position in this input stream.
boolean	markSupported() Tests if this input stream supports the mark and reset methods.
abstract int	read() Reads the next byte of data from the input stream.
int	read(byte[] b, int off, int len) Reads up to len bytes of data from the input stream into an array of bytes.
int	read(byte[] b) Reads some number of bytes from the input stream and stores them into the buffer array b.
synchronized void	reset() Repositions this stream to the position at the time the mark method was last called on this input stream.
long	skip(long n) Skips over and discards n bytes of data from this input stream.

From class java.lang.Object

Object	clone() Creates and returns a copy of this Object.
boolean	equals(Object obj) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of Class that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long timeout, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait(long timeout) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.

From interface java.io.Closeable

abstract void

close() Closes this stream and releases any system resources associated with it.

From interface java.lang.AutoCloseable

abstract void

close() Closes this resource, relinquishing any underlying resources.

Fields

protected String buffer

The string from which bytes are read.

protected int count

The number of valid characters in the input stream buffer.

See Also

• buffer

protected int pos

The index of the next character to read from the input stream buffer.

See Also

• buffer

Public Constructors

public StringBufferInputStream (String s)

Creates a string input stream to read data from the specified string.

Parameters

s	the underlying input buffer.

Public Methods

public synchronized int available ()

Returns the number of bytes that can be read from the input stream without blocking.

Returns

• the value of count - pos, which is the number of bytes remaining to be read from the input buffer.

public synchronized int read ()

Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned.

The read method of StringBufferInputStream cannot block. It returns the low eight bits of the next character in this input stream's buffer.

Returns

• the next byte of data, or -1 if the end of the stream is reached.

public synchronized int read (byte[] b, int off, int len)

Reads up to len bytes of data from this input stream into an array of bytes.

The read method of StringBufferInputStream cannot block. It copies the low eight bits from the characters in this input stream's buffer into the byte array argument.

Parameters

b	the buffer into which the data is read.
off	the start offset of the data.
len	the maximum number of bytes read.

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.

public synchronized void reset ()

Resets the input stream to begin reading from the first character of this input stream's underlying buffer.

public synchronized long skip (long n)

Skips n bytes of input from this input stream. Fewer bytes might be skipped if the end of the input stream is reached.

Parameters

n	the number of bytes to be skipped.

Returns

• the actual number of bytes skipped.