Plz help with this Exception "AWT-EventQueue-0" error
Hi guys,
I am developing an instant messaging using "smack API" and Openfire as the server. I have a login GUI which contains:
-username txtfield and password passwordfield
-and a login button.
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And Main GUI which contains:
-Menubar:File, Help
-status label with statusdropdownlist (available etc)
-JScroller with JTree to show the users "jst like msn, yahoo etc)
-and a logout button
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I am able to login to the client using the correct username/password then once i click login (in the Login GUI) it will take me to the Main GUI and show this error, I am not sure wat is causing this as i kept checkin time n time again so would appreciate if someone could offer a help.
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The loginbutton actionperformed code:
Code:
private void loginbtnActionPerformed(java.awt.event.ActionEvent evt) {
if(evt.getSource()==loginbtn){
try {
loginbtn();
} catch (XMPPException ex) {
System.out.println(ex);
}
}
Code:
public void loginbtn()throws XMPPException {
user = usernametxt.getText().trim().toLowerCase();
char [] input = passwordtxt.getPassword();
String password = String.valueOf(input).toLowerCase();
if(user.isEmpty() || password.isEmpty()) {
errorlbl.setText("Please type in a valid username and password");
}else if(user.contains(" ") || password.contains(" ")){
errorlbl.setText("Username and password cannot contain spaces");
}else{
connection.connect();
connection.login(user, password);
this.dispose();
new MainUI().setVisible(true);
}
}
}
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The error i get after clicking Login button:
Code:
run:
Exception in thread "AWT-EventQueue-0" java.lang.Error: java.lang.reflect.InvocationTargetException
at org.jdesktop.application.ApplicationAction.actionFailed(ApplicationAction.java:859)
at org.jdesktop.application.ApplicationAction.noProxyActionPerformed(ApplicationAction.java:665)
at org.jdesktop.application.ApplicationAction.actionPerformed(ApplicationAction.java:698)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
at java.awt.Component.processMouseEvent(Component.java:6263)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6028)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jdesktop.application.ApplicationAction.noProxyActionPerformed(ApplicationAction.java:662)
... 27 more
Caused by: java.lang.IllegalStateException: Already logged in to server.
at org.jivesoftware.smack.XMPPConnection.login(XMPPConnection.java:385)
at org.jivesoftware.smack.XMPPConnection.login(XMPPConnection.java:349)
at ChatClientMain.LoginUI.loginbtn(LoginUI.java:207)
... 32 more
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Thanks in advance
