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copied!<blockquote> <p>when i call the method Client_Handler(String auth, String user) and send the object it works fine, but when i call it again it doesn't work.</p> </blockquote> <p>Because, each time you are calling <code>Client_Handler(String auth, String user)</code> method you are trying to establish a new connection with Server via <code>socket2 = new Socket(serverAddress, 8080);</code> which is terminating the previous connection. That's why you are getting <code>EOFException</code> exception. You should create the <code>socket2</code> object once before calling <code>Client_Handler</code> method. And while calling the <code>Client_Handler</code> method simply use the initialized Socket <code>socket2</code>.<br></p> <p>You code could something be like this at client side:</p> <pre><code>Socket socket2; ObjectOutputStream out2 = null; public void mainMethod() { try { socket2 = new Socket(serverAddress, 8080); out2 = new ObjectOutputStream(socket2.getOutputStream()); boolean canSend = true; while (canSend) { canSend = Client_Handler("authentication","user"); } } catch (Exception ex) { ex.printStackTrace(); } finally { if (out2!=null) { try { out2.close(); } catch (Exception ex) { ex.printStackTrace(); } } } } public boolean Client_Handler(String auth, String user) { try { User_Authorization us3 = new User_Authorization(); us3.set_name(user); us3.set_authorization(auth); out2.writeUnshared(us3); }catch(Exception e) { JOptionPane.showMessageDialog(null, e, "Error", JOptionPane.ERROR_MESSAGE); return false; } return true; } </code></pre>

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