Java Server-Client Socket trouble (updated) -

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i managed make example of want program be. problem can't make socket connection work (the way want work). , don't know problem here.

public class testchat extends frame {  public static panel1 p1; public static panel2 p2; public static testchat tc;  public testchat() {     super();     setpreferredsize(new dimension(800, 600));     setlayout(new borderlayout());     addwindowlistener(new windowadapter() {         public void windowclosing(windowevent we) {             system.exit(0);         }     });      p1 = new panel1();     p2 = new panel2();     add(p1); }  public static void main(string[] args) {     // todo code application logic here     tc = new testchat();     tc.pack();     tc.setvisible(true);     ///*     try {         testchat.p2.run();     } catch (ioexception ioe) {         system.out.println("io here");     }     //*/ }  public void change(int to) {     if (to == 1) {         tc.remove(p2);         tc.add(p1);     }     if (to == 2) {         tc.remove(p1);         tc.add(p2);     }     tc.pack(); } }  public class panel1 extends panel implements actionlistener{  public button button = new button("launch chat");  public panel1() {     super();     setlayout(new borderlayout());     label label = new label("launcher panel here");     add(label);     add(button, borderlayout.south);     button.addactionlistener(this); }  @override public void actionperformed(actionevent e) {     if (e.getsource() == button) {         testchat.tc.change(2);         /*         try {             testchat.p2.run();         } catch (ioexception ioe) {             system.out.println("io here");         }         //*/     } }  }  public class panel2 extends panel implements actionlistener {  private static final int login_max = 300; public static textarea ta = new textarea(); public static textfield tf = new textfield(); public static textarea logins = new textarea(); public static printwriter out = null; public static string[] loginlist = new string[login_max]; public static int logincount = 0; public panel temp = new panel(); public button startbutton = new button("start!"); ///* public string fromserver; public bufferedreader in = null; public bufferedreader stdin; public socket kksocket = null; //*/  public panel2() {     setlayout(new borderlayout());     temp.setlayout(new borderlayout());     ta.seteditable(false);     tf.addactionlistener(this);     startbutton.addactionlistener(this);     logins.seteditable(false);     temp.add(ta, borderlayout.center);     temp.add(tf, borderlayout.south);     add(temp);     add(logins, borderlayout.east);     add(startbutton, borderlayout.south); }  //private static void makelogins() { public static void makelogins() {     string userarea = loginlist[0] + "\n";     (int = 1; < logincount; i++) {         userarea = userarea + loginlist[i] + "\n";     }     logins.settext(userarea); }  public void run() throws ioexception {      kksocket = null;      bufferedreader in = null;      try {         kksocket = new socket("localhost", 4444);         out = new printwriter(kksocket.getoutputstream(), true);         in = new bufferedreader(new inputstreamreader(kksocket.getinputstream()));     } catch (unknownhostexception e) {         //system.err.println("can't host server.");         system.out.println("can't host server.");         system.exit(1);     } catch (ioexception e) {         system.err.println("couldn't i/o connection server.");         system.exit(1);     }      bufferedreader stdin = new bufferedreader(new inputstreamreader(system.in));     string fromserver;      while ((fromserver = in.readline()) != null) {         validate();         if (fromserver.startswith("cmd_newuser_")) {             loginlist[logincount++] = fromserver.substring(12);             if (logincount > 1) {                 arrays.sort(loginlist, 1, logincount - 1);             }             makelogins();         } else if (fromserver.startswith("cmd_deleteuser_")) {             string tmp = fromserver.substring(15);             (int = 0; < logincount; i++) {                 if (loginlist[i].equals(tmp)) {                     loginlist[i] = "" + ((char) 255);                     break;                 }             }             arrays.sort(loginlist, 1, logincount);             logincount--;             makelogins();         } else {             ta.append(fromserver + "\n");         }         if (fromserver.equals("bye.")) {             break;         }     }      out.close();     in.close();     stdin.close(); }  private void sendstr(printwriter out) {     if (tf.gettext() != "") {         out.println(tf.gettext());         tf.settext("");     } }  @override public void actionperformed(actionevent e) {     if (e.getsource() == tf) {         sendstr(out);     } else if (e.getsource() == startbutton) {         system.out.println("i make actions in original proj");     } } }

when use way, program connects , works fine. want start connection panel1 class when button pressed (commented call). problem here , how can solve it?

p.s. here server code (just in case)

public class kkmultiserver extends frame {  public static int usercount = 0; public static label users; public static kkmultiserverthread[] userlist=new kkmultiserverthread[100]; public static int writer=0; public static int curnum=1;  public kkmultiserver() {     super("server");     setlayout(new gridlayout(2, 1));     users = new label("users online: " + usercount);     add(users);     setlocation(200, 200);     setresizable(false);     setminimumsize(new dimension(300, 200));     addwindowlistener(new windowadapter() {         public void windowclosing(windowevent we) {             system.exit(0);         }     }); }  public static void main(string[] args) throws ioexception {     serversocket serversocket = null;     boolean listening = true;     kkmultiserver server = new kkmultiserver();     server.pack();     server.setvisible(true);      try {         serversocket = new serversocket(4444);     } catch (ioexception e) {         system.err.println("could not listen on port: 4444.");         system.exit(-1);     }      while (listening) {                                      userlist[writer]=new kkmultiserverthread(serversocket.accept());         system.out.println("client added!");         usercount++;         users.settext("users online: " + usercount);         userlist[writer++].start();                }      serversocket.close(); } }

i'm not sure understand problem fully. if want on button press idea use listener , perform actions listener. example of mouselistener run code in method mousepressed() when button pressed.

this small private class implemenets mouselistener interface:

  private class connectbuttonlistener implements mouselistener{          @override         public void mousepressed(mouseevent arg0) {              //connect serversocket              conecttoserver();           }         }

you need add listener button:

button connectbutton = new button();         connectbutton.addmouselistener(new connectbuttonlistener());

this should done create button. after done click on button run mousepressed method. connect code should go.

also when initialize frames , panels should done in swing thread , not main thread.

swingutilities.invokelater(new runnable(){      @override     public void run() {           //initialize gui here      }  });

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