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What this is

This file is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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The source code

 * Copyright 2001-2004 The Apache Software Foundation
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
import java.util.EventListener;

 * The CopyStreamListener class can accept CopyStreamEvents to keep track
 * of the progress of a stream copying operation.  However, it is currently
 * not used that way within NetComponents for performance reasons.  Rather
 * the bytesTransferred(long, int) method is called directly rather than
 * passing an event to bytesTransferred(CopyStreamEvent), saving the creation
 * of a CopyStreamEvent instance.  Also, the only place where
 * CopyStreamListener is currently used within NetComponents is in the
 * static methods of the uninstantiable class, which
 * would preclude the use of addCopyStreamListener and
 * removeCopyStreamListener methods.  However, future additions may use the
 * JavaBean event model, which is why the hooks have been included from the
 * beginning.


* @see CopyStreamEvent * @see CopyStreamAdapter * @see Util * @author Daniel F. Savarese * @version $Id:,v 1.9 2004/02/29 10:26:55 scolebourne Exp $ */ public interface CopyStreamListener extends EventListener { /** * This method is invoked by a CopyStreamEvent source after copying * a block of bytes from a stream. The CopyStreamEvent will contain * the total number of bytes transferred so far and the number of bytes * transferred in the last write. * @param event The CopyStreamEvent fired by the copying of a block of * bytes. */ public void bytesTransferred(CopyStreamEvent event); /** * This method is not part of the JavaBeans model and is used by the * static methods in the class for efficiency. * It is invoked after a block of bytes to inform the listener of the * transfer. * @param totalBytesTransferred The total number of bytes transferred * so far by the copy operation. * @param bytesTransferred The number of bytes copied by the most recent * write. * @param streamSize The number of bytes in the stream being copied. * This may be equal to CopyStreamEvent.UNKNOWN_STREAM_SIZE if * the size is unknown. */ public void bytesTransferred(long totalBytesTransferred, int bytesTransferred, long streamSize); }

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