java - Close server button problems -

i new java. start server button

    jbutton startserverbutton = new jbutton("start");     startserverbutton.addactionlistener(new actionlistener() {         public void actionperformed(actionevent e) {             if (e.getactioncommand().equals("start")) {                 runnable serverrunnable = new runnable() {                     public void run() {                         runserver();                     }                 };                 thread serverthread = new thread(serverrunnable);                 serverthread.start();             }         }     }); 

and want close button

    jbutton endserverbutton = new jbutton("end");     endserverbutton.addactionlistener(new actionlistener() {         public void actionperformed(actionevent e) {             if (e.getactioncommand().equals("end")) {                 closeconnection();             }         }     }); 

but close button doesnt work... please help! here's close function

private void closeconnection() {     displaymessage("\nterminating connection\n");     try {         output.close();         input.close();         connection.close();      } catch (ioexception ioexception) {         ioexception.printstacktrace();     } 

try these options:

1) put end operation in new thread , close start thread' io & socket connection. (means closing 1st thread socket connection thread)

2) in end operation thread, set start thread' socket timeout.

regards,