StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POSystem out/err streams in socket catch clause are working only in debug mode
text
Body
copied!<p>Like in topic - System out and err streams seems to be "frozen" in catch clause in "update" method of Kernel class. Oddly when I am debuging the project and stop at System.out line I can even remove breakthrough and everything works correct.</p> <p>Everything except last System.out is executed, it does not work even when I am replacing default System.out.</p> <p>At the moment I am disconnecting user just after connection is made.</p> <p>My code, StartServer.java:</p> <pre>public class StartServer { public static void main (String[] args) { Kernel kernel = new Kernel(4444); kernel.run(); while (true) { kernel.update(); } } } </pre> <p>Kernel.java:</p> <pre><code>import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; import java.util.ArrayList; import java.util.logging.Level; import java.util.logging.Logger; public class Kernel { ArrayList<Socket> clients; ServerSocket socket; public Kernel(int port) { try { socket = new ServerSocket(port); clients = new ArrayList<>(); System.out.println("Server initialized"); } catch (IOException ex) { Logger.getLogger(StartServer.class.getName()).log(Level.SEVERE, null, ex); } } public void run() { Thread thread = new Thread(){ public void run() { try { while (true) { Socket client = socket.accept(); clients.add(client); System.out.println("New user on the server!"); } } catch (IOException ex) { Logger.getLogger(Kernel.class.getName()).log(Level.SEVERE, null, ex); } } }; thread.start(); } public void update() { for (int i=0; i<clients.size(); i++) { Socket s = clients.get(i); try { /*String result; if (s.getInputStream().available()!=0) { byte[] byteRes = new byte[s.getInputStream().available()]; char[] charRes = new char[s.getInputStream().available()]; s.getInputStream().read(byteRes); for (int i2=0; i2<charRes.length; i2++) { charRes[i2] = (char) byteRes[i2]; } result = String.copyValueOf(charRes); System.out.println(result); }*/ throw new IOException(); } catch (IOException ex) { try { System.out.println("Client disconnected"); //working only in debug mode clients.remove(s); s.close(); i--; } catch (IOException ex1) { Logger.getLogger(Kernel.class.getName()).log(Level.SEVERE, null, ex1); } } } } } </code></pre>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload