public CopyDoc() 
{
        super();
}

Constructor.

 public  void doIt(String in,
    String out) throws IOException, COSVisitorException 
{
        java.io.InputStream is = null;
        java.io.OutputStream os = null;
        COSWriter writer = null;
        try
        {
            is = new java.io.FileInputStream(in);
            PDFParser parser = new PDFParser(is);
            parser.parse();
            COSDocument doc = parser.getDocument();
            os = new java.io.FileOutputStream(out);
            writer = new COSWriter(os);
            writer.write(doc);
        }
        finally
        {
            if( is != null )
            {
                is.close();
            }
            if( os != null )
            {
                os.close();
            }
            if( writer != null )
            {
                writer.close();
            }
        }
}

This will perform the document copy.

 public static  void main(String[] args) 
{
        CopyDoc app = new CopyDoc();
        try
        {
            if( args.length != 2 )
            {
                app.usage();
            }
            else
            {
                app.doIt( args[0], args[1]);
            }
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
}

This will copy a PDF document.
see usage() for commandline