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copied!<p>You are basically reading the contents of the file when you select it, discard the contents and then trying to send the last <code>int</code> value you read from it to the server. A file my be many, many, many bytes long (think giga bytes), an <code>int</code> ins't going to hold that much information (poor <code>int</code>).</p> <p>Instead, when the user selects a <code>File</code>, you should maintain a reference to it until you actually need it...</p> <pre><code>public void actionPerformed(ActionEvent e) { try { if (e.getSource() == b) { int x = fc.showOpenDialog(null); if (x == JFileChooser.APPROVE_OPTION) { fileToBeSent = fc.getSelectedFile(); tf.setText(f1.getAbsolutePath()); b1.setEnabled(true); } else { fileToBeSent = null; tf.setText(null;); b1.setEnabled(false); } } if (e.getSource() == b1) { send(); } } catch (Exception ex) { } } </code></pre> <p>When the user presses the "send" button, you would simply copy the file input stream to the sockets output stream...</p> <pre><code>FileInputStream in = null; try { in = new FileInputStream(fileToBeSent); byte[] buffer = new byte[1024]; int bytesIn = -1; while ((bytesIn = in.read(buffer)) != -1) { dout.write(buffer, 0, bytesIn); } dout.flush(); } finally { try { in.close(); } catch (Exception exp) { } } </code></pre> <p>That should at least get you one step closer.</p> <p>The next problem you are likely to hit is the fact that the UI will stop responding while the transfer is underway.</p> <p>In this case, you should take a look at <a href="http://docs.oracle.com/javase/tutorial/uiswing/concurrency/" rel="nofollow">Concurrency in Swing</a>.</p> <p>Modern UI's need to deal with many different characteristics of client machines, included different fonts, font rendering capabilities, DPI, screen resolutions and lots more. You're putting your self in a very dark and deep hole by using absolute layouts.</p> <p>You should take advantage of the layout manager API which is designed to easy the pressure of these concerns and make you UI more accommodating on different operating environments.</p> <p>Take a look at <a href="http://docs.oracle.com/javase/tutorial/uiswing/layout/index.html" rel="nofollow">Layout out Components within a Container</a> for more deatils</p> <p>You may also want to take a closer look at <a href="http://docs.oracle.com/javase/tutorial/essential/io/" rel="nofollow">Basic I/O</a> and <a href="http://docs.oracle.com/javase/tutorial/networking/sockets/" rel="nofollow">All about sockets</a> for more details...</p>

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