GUI Multithreading problems

I'm making a chat client and I'm having problems with the threading around the GUI. It works when I don't use the GUI (and ActionListeners aren't at fault). I basically have two threads, a send thread and a receive thread, which are both subclasses that extend Thread. When I start them through the GUI, on an ActionListener, they don't work... but when I start them in a program that is GUI-less, they do work. Just for clarification, it's not the ActionListeners at fault, I tried doing a System.out on the same ActionListener and it worked.
A peculiarity is that when I make a new instance of the same frame [another frame.setVisible(true)] in my Receive thread, it starts receiving on the new window. I get the messages from the server, but I can't send stuff. I used to view this as a half-success, but now I think I'm going about it all wrong.
So, here's my questions:
1.Do I need to make more threads? I thought that everything outside the Receive and Send threads were naturally in a thread themselves, but it seems that they are not. Should I put the TextArea in my GUI that receives messages in a different Thread?
2.Or is the problem that I have to somehow refresh the frame without causing it to make new frames?

It's hard to tell what's going on without seeing your code. What do you mean when you say "When I start them through the GUI, on an ActionListener, they don't work"? Does that mean the threads don't start, or you don't see anything happening in GUI, or everything freezes, or... etc, etc.? Please post code or describe the sequence of events in detail so we can help.
As a guess, it sounds like you're starting your threads when you press send, which doesn't sound right. In a chat, both threads should be running from the beginning, and when you have stuff to send you put it in a queue, then let the send thread pick it up. The receive thread just receives and puts messagese in the GUI. - see http://java.sun.com/products/jfc/tsc/articles/threads/threads1.html

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* Title: 
* Description: 
* Copyright: Copyright (c) 2005
* Company: 
* @author not attributable
* @version 1.0
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* Description: 
* Copyright: Copyright (c) 2005
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* Description: 
* Copyright: Copyright (c) 2005
* Company: 
* @author not attributable
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package guess10;
* Title: 
* Description: 
* Copyright: Copyright (c) 2005
* Company: 
* @author not attributable
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* Description: 
* Copyright: Copyright (c) 2005
* Company: 
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* Description: 
* Copyright: Copyright (c) 2005
* Company: 
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* Description: 
* Copyright: Copyright (c) 2005
* Company: 
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* @version 1.0
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* Description: 
* Copyright: Copyright (c) 2005
* Company: 
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copy the java file into notepad, and save to .java file,
then javac guess10\*.java file to compile, and java guess.Guess10 to run , then can see the gui's output,
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I have a problem in a rather complicated VI where bringing up the open file dialog halts some background operations.
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"N Cook" wrote in message
news:[email protected]..
> Warning: Newbie to Labview...
>
> I have a problem in a rather complicated VI where bringing up the open
> file dialog halts some background operations.
>
> I would real
ly like to reproduce this behaviour for various reasons,
> but am unable to. I've created a simple VI with a for-loop where the
> index feeds a sine converter which in turn feeds a tank indicator.
> This produces an oscillating behaviour. To this VI I've added a file
> dialog control.
>
> Regardless of the multithreading setup, I'm unable to get the
> oscillating of the tank indicator to stop when the dialog is open. Is
> there something I can do to get this behaviour? I realize it's unusual
> to try to break things, but it is rather important for me.
>
> Thank you,
> Nigel

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3082023A 308201A3 A0030201 02020101 300D0609 2A864886 F70D0101 04050030
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no activation-character
line vty 0 4
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hey thanks for replying... i'm sorry but in a rush here...
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the JTextPane does not update. I have gone through the root of re-adding all of the 3 components to the JFrame and then calling setVisible(true) which works, but it makes the GUI blink and i am sure there is a clearer, better, easier way of doing this. I have also tried the random adding of repaint() to every component i could find but again to no avail, Any help would be greatly appreciated as to how i can get the bottom right JScrollPane to show the update JTextPane. Thanks in advance.

thanks again, the setDocument method does work, but unforutnatley i have mouseListeners and hyperlink listeners in the pane that i am overwrtiing the old pane with. Is there anyway to transfer these as well?
I tried using the revalidate method on the JScrollPane the text pane is in, the textpane itself, the splitpane the scroll pane is in and the split pane the splitpane is in. i also tried doing all of these at the same time but this didn't seem to do anything. Thanks again, if there is no easy solution do not worry since i can use the setVisible() method i have been using as it does the job, if in a somewhat ugly fashion.

GUI freeze problem

Hi everyone, im having a new problem with my sockets, i want to implement a button to stop server but because its client/server architecture it is freezed, how can i separate interface, please help :S

Like you say hiwa maybe the problems is the client, i posted in other post, but is not problem to post it again, thanks!!!
import java.net.*;
import java.io.*;
public class RecivirArchivoEncriptado2{
String fileCharSet;
String separator;
Socket clientsocket;
BufferedReader socketInput;
String s;
public RecivirArchivoEncriptado2(){
    fileCharSet = "UTF-8";
    separator = "##$##$##";
    try {
      clientsocket = new Socket("127.0.0.1", 12349);
      socketInput = new BufferedReader
       (new InputStreamReader(clientsocket.getInputStream(), fileCharSet));
    catch (Exception e){
      e.printStackTrace();
   public void doFileGet(){
    try{
      PrintWriter fileOutput
       = new PrintWriter(new FileOutputStream("archivoEncriptado.txt"), true);
      while ((s = socketInput.readLine()) != null){
        if (s.equals(separator)){
          break;
        fileOutput.println(s);
      fileOutput.close();
      fileOutput.flush();
      System.out.println("archivo encriptado recivido");
      fileOutput
       = new PrintWriter(new FileOutputStream("archivoPlano.txt"), true);
      while ((s = socketInput.readLine()) != null){
        fileOutput.println(s);
      fileOutput.flush();
      fileOutput.close();
      System.out.println("archivo plano recivido");
      socketInput.close();
      clientsocket.close();
    catch(IOException e) {
      System.out.println("conection refused port 12345");
}}

GUI update problem: button take time to be disabled

I have a Stop button. In the actionPerformed() method for the button, I disable the button and also some other buttons (using setEnabled(false)) then there are some other codes that include Thread.sleep() method. Then again I enable some other buttons. Problem is the Stop button take time to be disabled. The time exactly equals sec provided in the sleep() method. I tried by puting the button disabling buttons' code in another thread that is called from SwingUtilies.invokeLater() method just before the sleep() method. It is very important to disable some buttons before Thread.sleep() is called. And only after the sleep() method I can enable some other buttons.
Please help me.

Hello Experts! I can't hear you. 1) Swing related questions should be posted in the Swing forum
2) Quit bumping your question, you only posted it 30 minutes ago. People will answer when they have the time.
Your code in the actionListener needs to be executed in a separate Thread, so that when you invoke the "sleep" method the separate Thread sleeps, not the Event Thread.

WLC 2112 GUI Connection problem

I am not able to connect to the GUI on the Cisco Wireless Controller 2112. I noticed from the interface summary that the "GU" (GUI?) are all "No" on both the management and ap-manager interfaces. How to set them to "Yes" from the console (CLI)?
Thanks.
<<<<System Info>>>>
(Cisco Controller) >show interface summary
Interface Name Port Vlan Id IP Address Type Ap Mgr Gu
est
ap-manager 1 untagged 10.1.4.62 Static Yes No
management 1 untagged 10.1.4.61 Static No No
virtual N/A N/A 1.1.1.1 Static No No
(Cisco Controller) > show network summary
RF-Network Name............................. RFGroup
Web Mode.................................... Enable
Secure Web Mode............................. Enable
Secure Web Mode Cipher-Option High.......... Disable
Secure Web Mode Cipher-Option SSLv2......... Enable
Secure Shell (ssh).......................... Enable
Telnet...................................... Enable
Ethernet Multicast Mode..................... Disable
Ethernet Broadcast Mode..................... Disable
AP Multicast Mode........................... Multicast Address : 0.0.0.0
IGMP snooping............................... Disabled
IGMP timeout................................ 60 seconds
User Idle Timeout........................... 300 seconds
ARP Idle Timeout............................ 300 seconds
Cisco AP Default Master..................... Disable
AP Join Priority............................ Disable
Mgmt Via Wireless Interface................. Disable
Mgmt Via Dynamic Interface.................. Enable
Bridge MAC filter Config.................... Enable
Bridge Security Mode........................ EAP
Mesh Full Sector DFS........................ Enable
--More-- or (q)uit
Over The Air Provisioning of AP's........... Disable
AP Fallback ................................ Enable
Web Auth Redirect Ports .................... 80
Fast SSID Change ........................... Disabled
(Cisco Controller) > show run-config
Interface Configuration
Interface Name................................... ap-manager
MAC Address...................................... 70:81:05:af:1d:20
IP Address....................................... 10.1.4.62
IP Netmask....................................... 255.255.252.0
IP Gateway....................................... 10.1.2.1
VLAN............................................. untagged
Physical Port.................................... 1
Primary DHCP Server.............................. 10.1.2.1
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... Yes
Guest Interface.................................. No
Interface Name................................... management
MAC Address...................................... 70:81:05:af:1d:20
IP Address....................................... 10.1.4.61
IP Netmask....................................... 255.255.252.0
IP Gateway....................................... 10.1.2.1
VLAN............................................. untagged
Quarantine-vlan.................................. 0
Physical Port.................................... 1
Primary DHCP Server.............................. 10.1.2.1
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
Interface Name................................... virtual
MAC Address...................................... 70:81:05:af:1d:20
IP Address....................................... 1.1.1.1
DHCP Option 82................................... Disabled
Virtual DNS Host Name............................ Disabled
AP Manager....................................... No
Guest Interface.................................. No

Port 30 detail Info:
GigabitEthernet0/30 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0c85.25d4.a91e (bia 0c85.25d4.a91e)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
 reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:31, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
 6841 packets input, 2789942 bytes, 0 no buffer
 Received 3461 broadcasts (3042 multicasts)
 18549 runts, 0 giants, 0 throttles
 18549 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
 0 watchdog, 3042 multicast, 0 pause input
 0 input packets with dribble condition detected
 383015 packets output, 66928405 bytes, 0 underruns
 0 output errors, 0 collisions, 5 interface resets
 0 babbles, 0 late collision, 0 deferred
 0 lost carrier, 0 no carrier, 0 PAUSE output
 0 output buffer failures, 0 output buffers swapped out
Interface summary
*: interface is up
IHQ: pkts in input hold queue IQD: pkts dropped from input queue
OHQ: pkts in output hold queue OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec) RXPS: rx rate (pkts/sec)
TXBS: tx rate (bits/sec) TXPS: tx rate (pkts/sec)
TRTL: throttle count
Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
* Vlan1 0 12861 0 0 0 0 0 0 0
GigabitEthernet0/1 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/2 0 0 0 0 0 0 2000 1 0
GigabitEthernet0/3 0 0 0 0 0 0 0 0 0
GigabitEthernet0/4 0 0 0 0 0 0 0 0 0
GigabitEthernet0/5 0 0 0 0 0 0 0 0 0
GigabitEthernet0/6 0 0 0 0 0 0 0 0 0
GigabitEthernet0/7 0 0 0 0 0 0 0 0 0
GigabitEthernet0/8 0 0 0 0 0 0 0 0 0
GigabitEthernet0/9 0 0 0 0 0 0 0 0 0
GigabitEthernet0/10 0 0 0 0 0 0 0 0 0
GigabitEthernet0/11 0 0 0 0 0 0 0 0 0
GigabitEthernet0/12 0 0 0 0 0 0 0 0 0
GigabitEthernet0/13 0 0 0 0 0 0 0 0 0
GigabitEthernet0/14 0 0 0 0 0 0 0 0 0
GigabitEthernet0/15 0 0 0 0 0 0 0 0 0
GigabitEthernet0/16 0 0 0 7219768 0 0 0 0 0
GigabitEthernet0/17 0 0 0 0 0 0 0 0 0
GigabitEthernet0/18 0 0 0 0 0 0 0 0 0
GigabitEthernet0/19 0 0 0 0 0 0 0 0 0
GigabitEthernet0/20 0 0 0 0 0 0 0 0 0
GigabitEthernet0/21 0 0 0 0 0 0 0 0 0
GigabitEthernet0/22 0 0 0 0 0 0 0 0 0
GigabitEthernet0/23 0 0 0 0 0 0 0 0 0
GigabitEthernet0/24 0 0 0 0 0 0 0 0 0
GigabitEthernet0/25 0 0 0 0 0 0 0 0 0
GigabitEthernet0/26 0 0 0 0 0 0 0 0 0
GigabitEthernet0/27 0 0 0 0 0 0 0 0 0
GigabitEthernet0/28 0 0 0 0 0 0 0 0 0
GigabitEthernet0/29 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/30 0 0 0 0 0 0 2000 2 0
GigabitEthernet0/31 0 0 0 0 0 0 0 0 0
GigabitEthernet0/32 0 0 0 0 0 0 0 0 0
GigabitEthernet0/33 0 0 0 0 0 0 0 0 0
GigabitEthernet0/34 0 0 0 0 0 0 0 0 0
GigabitEthernet0/35 0 0 0 0 0 0 0 0 0
GigabitEthernet0/36 0 0 0 0 0 0 0 0 0
GigabitEthernet0/37 0 0 0 4997649 0 0 0 0 0
GigabitEthernet0/38 0 0 0 0 0 0 0 0 0
GigabitEthernet0/39 0 0 0 0 0 0 0 0 0
GigabitEthernet0/40 0 0 0 0 0 0 0 0 0
GigabitEthernet0/41 0 0 0 0 0 0 0 0 0
GigabitEthernet0/42 0 0 0 0 0 0 0 0 0
GigabitEthernet0/43 0 0 0 0 0 0 0 0 0
GigabitEthernet0/44 0 0 0 0 0 0 0 0 0
GigabitEthernet0/45 0 0 0 0 0 0 0 0 0
GigabitEthernet0/46 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/47 0 0 0 5011848 0 0 2000 2 0
Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
GigabitEthernet0/48 0 0 0 0 0 0 0 0 0
GigabitEthernet0/49 0 0 0 0 0 0 0 0 0
GigabitEthernet0/50 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/51 0 0 0 0 3000 3 1000 1 0
GigabitEthernet0/52 0 0 0 0 0 0 0 0 0

GUI size problem

When I run this code the GUI doesn't provide enough space for my buttons. It provides enough room for my JLabels and TextFields, but cut's off the buttons.
public class ReceivingOrganizer extends JPanel
     private JFrame frame;
     private JPanel jpMain, jpLine1, jpLine2, jpCheckBoxPanel;
     private JLabel jlContainer, jlSeal, jlTopInstruct;
     private JButton find, print;
     private JFormattedTextField ftfContainer, ftfSeal;
     public static void main(String[] args)
          ReceivingOrganizer object = new ReceivingOrganizer();
          object.createGUI();
     public ReceivingOrganizer()
          super(new GridBagLayout());
          GridBagConstraints c = new GridBagConstraints();
          jpMain = new JPanel(new GridBagLayout());
          jpMain.setBorder(BorderFactory.createEmptyBorder(30,30,30,30));
          jlTopInstruct = new JLabel("Enter container number or seal number: ");
          c.gridwidth=GridBagConstraints.REMAINDER;
          jpMain.add(jlTopInstruct, c);
          c.gridwidth= GridBagConstraints.RELATIVE;
          jlContainer = new JLabel("Container: ");
          jpMain.add(jlContainer, c);
          c.gridwidth= GridBagConstraints.RELATIVE;
          ftfContainer = new JFormattedTextField();
          ftfContainer.setColumns(15);
          jpMain.add(ftfContainer, c);
          //ftfContainer.addKeyListener(this);
          c.gridwidth= GridBagConstraints.REMAINDER;
          c.fill=GridBagConstraints.BOTH;
          find = new JButton("Find");
          jpMain.add(find, c);
          //find.setActionCommand("find");
          //find.addActionListener(this);
          c.gridwidth= GridBagConstraints.RELATIVE;
          jlSeal = new JLabel("Seal: ");
          jpMain.add(jlSeal, c);
          ftfSeal = new JFormattedTextField();
          ftfSeal.setColumns(15);
          jpMain.add(ftfSeal, c);
          //ftfSeal.addKeyListener(this);
          c.gridwidth= GridBagConstraints.REMAINDER;
          print = new JButton("Print");
          print.setEnabled(false);
          jpMain.add(print, c);
          //print.setActionCommand("print");
          //print.addActionListener(this);
          jpMain.setMinimumSize(jpMain.getSize());
          add(jpMain, c);
     public void createGUI()
          frame = new JFrame("Receiving Organizer");
          frame.setResizable(true);
          frame.setLocationByPlatform(true);
          frame.setMinimumSize(frame.getSize());
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.add(new ReceivingOrganizer());
          //Display the window.
          frame.pack();
          frame.setVisible(true);
}

Don't use GridBagConstraints.RELATIVE for more than one component in the same row, and then only for the second-last component in the row. Read the API:
Use RELATIVE to specify that the component's display area will be from gridx to the next to the last one in its row.
Additionally, before a panel is validated or made visible, its size is zero, so you're effectively setting the minmum size to [0,0] -- not, I'm usre, what you intended to do. Ditto for the JFrame. I've added a couple of sysouts for you to see this for yourself.import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.*;
public class ReceivingOrganizer extends JPanel {
private JFrame frame;
private JPanel jpMain;
private JLabel jlContainer, jlSeal, jlTopInstruct;
private JButton find, print;
private JFormattedTextField ftfContainer, ftfSeal;
public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
      @Override
      public void run() {
        new ReceivingOrganizer().createGUI();
public ReceivingOrganizer() {
    super(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    jpMain = new JPanel(new GridBagLayout());
    jpMain.setBorder(BorderFactory.createEmptyBorder(30, 30, 30, 30));
    jlTopInstruct = new JLabel("Enter container number or seal number: ");
    c.gridwidth = GridBagConstraints.REMAINDER;
    jpMain.add(jlTopInstruct, c);
    c.gridwidth = 1;//GridBagConstraints.RELATIVE;
    jlContainer = new JLabel("Container: ");
    jpMain.add(jlContainer, c);
    c.gridwidth = GridBagConstraints.RELATIVE;
    ftfContainer = new JFormattedTextField();
    ftfContainer.setColumns(15);
    jpMain.add(ftfContainer, c);
    c.gridwidth = GridBagConstraints.REMAINDER;
    //c.fill = GridBagConstraints.BOTH;
    find = new JButton("Find");
    jpMain.add(find, c);
    c.gridwidth = 1;//GridBagConstraints.RELATIVE;
    jlSeal = new JLabel("Seal: ");
    jpMain.add(jlSeal, c);
    c.gridwidth = GridBagConstraints.RELATIVE;
    ftfSeal = new JFormattedTextField();
    ftfSeal.setColumns(15);
    jpMain.add(ftfSeal, c);
    c.gridwidth = GridBagConstraints.REMAINDER;
    print = new JButton("Print");
    print.setEnabled(false);
    jpMain.add(print, c);
    System.out.println("jpMain: " + jpMain.getSize());
    //jpMain.setMinimumSize(jpMain.getSize());
    add(jpMain, c);
    revalidate();
public void createGUI() {
    frame = new JFrame("Receiving Organizer");
    frame.setResizable(true);
    frame.setLocationByPlatform(true);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(this);
    System.out.println("Before pack: " + frame.getSize());
    //Display the window.
    frame.pack();
    System.out.println("After pack: " + frame.getSize());
    frame.setMinimumSize(frame.getSize());
    frame.setMinimumSize(frame.getSize());
    frame.setVisible(true);
}db
edit And you had two instances of ReceivingOrganizer, one instantiated in main(...) and the other in createGUI(). You don't need this, just add the present instance to the frame.
Edited by: DarrylBurke

GUI Multithreading problems

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