com.jalios.io
Class MultiInputStream

java.lang.Object
  extended by java.io.InputStream
      extended by 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()


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