com.jalios.io
Class MultiInputStream

java.lang.Object
  java.io.InputStream
      com.jalios.io.MultiInputStream

All Implemented Interfaces:

Closeable

public class MultiInputStream
extends InputStream

This class is a facade on an array of InputStream. When the first InputStream is empty it reads in the next.

Version:

$Revision: 27751 $

Author:

Olivier Dedieu

Field Summary

static String

REVISION

Constructor Summary

MultiInputStream(InputStream[] array)

Method Summary

int	available() Returns the number of bytes that can be read from this input stream without blocking.
void	close() Closes this input stream and releases any system resources associated with the stream.
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.
int	read() Reads the next byte of data from this input stream.

Methods inherited from class java.io.InputStream

read, read, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

REVISION

public static final String REVISION

See Also:

Constant Field Values

Constructor Detail

MultiInputStream

public MultiInputStream(InputStream[] array)

Method Detail

read

public int read()
         throws 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.

Specified by:

read in class InputStream

Returns:

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

Throws:

IOException - if an I/O error occurs.

Since:

JDK1.0

available

public int available()
              throws 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.

Overrides:

available in class InputStream

Returns:

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

Throws:

IOException - if an I/O error occurs.

Since:

JDK1.0

close

public void close()
           throws IOException

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

The close method of InputStream does nothing.

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException - if an I/O error occurs.

Since:

JDK1.0

mark

public void mark(int readlimit)

Marks the current position in this input stream. A subsequent call to the reset method repositions this stream at the last marked position so that subsequent reads re-read the same bytes.

The readlimit arguments tells this input stream to allow that many bytes to be read before the mark position gets invalidated.

Overrides:

mark in class InputStream

Parameters:

readlimit - the maximum limit of bytes that can be read before the mark position becomes invalid.

Since:

JDK1.0

See Also:

InputStream.reset()

markSupported

public boolean markSupported()

Tests if this input stream supports the mark and reset methods. The markSupported method of InputStream returns false.

Overrides:

markSupported in class InputStream

Returns:

true if this true type supports the mark and reset method; false otherwise.

Since:

JDK1.0

See Also:

InputStream.mark(int), InputStream.reset()