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javax.mail.internet
Interface SharedInputStream


public interface SharedInputStream

An InputStream that is backed by data that can be shared by multiple readers may implement this interface. This allows users of such an InputStream to determine the current positionin the InputStream, and to create new InputStreams representing a subset of the data in the original InputStream. The new InputStream will access the same underlying data as the original, without copying the data.

Since:
JavaMail 1.2
Version:
1.2, 02/03/27
Author:
Bill Shannon

Method Summary
long getPosition()
Return the current position in the InputStream, as an offset from the beginning of the InputStream.
InputStream newStream(long start, long end)
Return a new InputStream representing a subset of the data from this InputStream, starting at start (inclusive) up to end (exclusive).

Method Detail

getPosition

public long getPosition()
Return the current position in the InputStream, as an offset from the beginning of the InputStream.

Returns:
the current position

newStream

public InputStream newStream(long start,
 long end)
Return a new InputStream representing a subset of the data from this InputStream, starting at start (inclusive) up to end (exclusive). start must be non-negative. If end is -1, the new stream ends at the same place as this stream. The returned InputStream will also implement the SharedInputStream interface.

Parameters:
start - the starting position
end - the ending position + 1
Returns:
the new stream

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