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    <p>I introduced a derived <strong><code>FileEntity</code></strong> that just counts the written bytes. It uses <strong><code>OutputStreamProgress</code></strong> that does the actual counting (kind of a <strong>decorator</strong> to the actual <code>OutputStream</code>).</p> <p>The <strong>advantage</strong> of this (and decoration in general) is that I do <strong>not</strong> need to copy the actual implementation, like the the actual copying from the file stream to the output stream. I can also change to use a different (newer) implementation, like the <code>NFileEntity</code>.</p> <p>Enjoy...</p> <h2>FileEntity.java</h2> <pre><code>public class FileEntity extends org.apache.http.entity.FileEntity { private OutputStreamProgress outstream; public FileEntity(File file, String contentType) { super(file, contentType); } @Override public void writeTo(OutputStream outstream) throws IOException { this.outstream = new OutputStreamProgress(outstream); super.writeTo(this.outstream); } /** * Progress: 0-100 */ public int getProgress() { if (outstream == null) { return 0; } long contentLength = getContentLength(); if (contentLength &lt;= 0) { // Prevent division by zero and negative values return 0; } long writtenLength = outstream.getWrittenLength(); return (int) (100*writtenLength/contentLength); } } </code></pre> <h2>OutputStreamProgress.java</h2> <pre><code>public class OutputStreamProgress extends OutputStream { private final OutputStream outstream; private volatile long bytesWritten=0; public OutputStreamProgress(OutputStream outstream) { this.outstream = outstream; } @Override public void write(int b) throws IOException { outstream.write(b); bytesWritten++; } @Override public void write(byte[] b) throws IOException { outstream.write(b); bytesWritten += b.length; } @Override public void write(byte[] b, int off, int len) throws IOException { outstream.write(b, off, len); bytesWritten += len; } @Override public void flush() throws IOException { outstream.flush(); } @Override public void close() throws IOException { outstream.close(); } public long getWrittenLength() { return bytesWritten; } } </code></pre>
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    1. POHow to get a progress bar for a file upload with Apache HttpClient 4?
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    1. USAlikElzin-kilaka
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    1. COLove the decorator idea. I extended it some in another answer.
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    2. COWhere did you extend it? Perhaps it may be of value here.
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    3. COWoops! I meant to vote it up. I responded to this thread just below yours.
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