public void closeClient(String user) {
Handler client = (Handler) handlers.get(user);
client.sendStop();
try {
client.close();
} catch (IOException ex) {
Logger.getLogger(EchoServer.class.getName()).log(Level.SEVERE, null, ex);
}
handlers.remove(user);
sendOnlineUsersMsg();
Logger.getLogger(EchoServer.class.getName())
.log(Level.INFO, "Closed a client", new Object[] {client.getUsername()});
}
