com.dalsemi.comm
Class SerialInputStream

java.lang.Object
  |
  +--java.io.InputStream
        |
        +--com.dalsemi.comm.SerialInputStream

public class SerialInputStream

extends java.io.InputStream

A Serial input stream is an input stream for reading data from an serial port.

Method Summary

int	available() Returns the number of bytes that can be read from this input stream without blocking.
void	close() Closes this Serial input stream and releases any system resources associated with the stream.
protected void	disableReceiveThreshold()
protected void	enableReceiveThreshold(int thresh)
protected boolean	isReceiveThresholdEnabled()
int	read() Reads the next byte of data from this input stream.
int	read(byte[] barr, int offset, int len) Reads the number of bytes requested from this input stream.
void	unread(byte b) Method unread

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

read

public int read()
         throws java.io.IOException

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. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

Returns:

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

Throws:

java.io.IOException - if an I/O error occurs.

Overrides:

read in class java.io.InputStream

read

public int read(byte[] barr,
                int offset,
                int len)
         throws java.io.IOException

Reads the number of bytes requested from this input stream. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

Parameters:

barr - the array to be filled.

offset - the offset to begin writting in the array.

len - the number of bytes requested.

Returns:

the number of bytes read or -1 if the end of the stream has been reached.

Throws:

java.io.IOException -

Overrides:

read in class java.io.InputStream

See Also:

unread

public void unread(byte b)
            throws java.io.IOException

Method unread

Parameters:

b -

Throws:

java.io.IOException -

close

public void close()
           throws java.io.IOException

Closes this Serial input stream and releases any system resources associated with the stream.

Throws:

java.io.IOException - if an I/O error occurs.

Overrides:

close in class java.io.InputStream

available

public int available()
              throws java.io.IOException

Returns the number of bytes that can be read from this input stream without blocking. The available method of InputStream returns 0. This method should be overridden by subclasses.

Returns:

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

Throws:

java.io.IOException - if an I/O error occurs.

Overrides:

available in class java.io.InputStream

enableReceiveThreshold

protected void enableReceiveThreshold(int thresh)
                               throws javax.comm.UnsupportedCommOperationException

disableReceiveThreshold

protected void disableReceiveThreshold()

isReceiveThresholdEnabled

protected boolean isReceiveThresholdEnabled()