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SharedInputStream.javaAPI DocJavaMail 1.4.33575Tue Nov 17 10:38:12 GMT 2009javax.mail.internet

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 position in 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.

Note that implementations of this interface must ensure that the close method does not close any underlying stream that might be shared by multiple instances of SharedInputStream until all shared instances have been closed.

author
Bill Shannon
since
JavaMail 1.2

Fields Summary
Constructors Summary
Methods Summary
public longgetPosition()
Return the current position in the InputStream, as an offset from the beginning of the InputStream.

return
the current position

public java.io.InputStreamnewStream(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.

param
start the starting position
param
end the ending position + 1
return
the new stream