Bug or Feature? Different behavior after 1.6.0_02 in both Firefox & IE6/IE7

Greetings,
I have been testing a small java applet for a phpbb mod, named Proxy Revealer
Basically the java applet "phones home" (connects back to the http host serving the applet) via a Socket connection to establish a direct connection, then basically writes a custom HttpRequest string with some parameters passed to it from the php script's HTML, so it looks like:
GET /probe.php?mode=java&ip=initial_external_ip&extra=random_unique_identifier&local=LAN_IP&vendor=java_vendor&version=num&user_agent=browser
which would allow the php script on the host/site to verify the client's IP address, and compare it with the initial IP that requested the page which loaded the applet, as well as Internal LAN IP if user is behind a router/NAT
This allows the php script to unmask & log proxied users for security purposes, in case of spamming/trolling on the forum, in an attempt to thwart the average spammers/trollers at the least.
The applet and the code works as desired and in various browsers, but only on JRE 1.6.0_02 and earlier releases...
It seems ever since JRE 1.6.0_03, this has stopped working when the end-user has HTTP Proxy configured in the browser.
I tested latest JRE as of date, ver 1.6.0_07, with IE6, IE7 & Firefox 2.0.0.15 and 2.0.0.16 and it still exhibits this odd behavior.
This is what appears in Java Console when I try to visit the page serving this applet with an HTTP proxy configured in browser:
java.security.AccessControlException: access denied (java.net.SocketPermission xxx.xxx.xxx.xxx:80 connect,resolve)
xxx.xxx.xxx.xxx is the resolved IP of the server host that is hosting the applet, so basically the same origin....
If I disable the HTTP Proxy configured in the browser, the applet connects back fine. So it only happens when HTTP Proxy is configured in browser..
Is this a new feature or a bug??
Here's the java applet code:
// httpRequestor.java
// Copyright (c) MMVI TerraFrost
// Licensed under the GPL.
import java.applet.*;
import java.net.*;
public class HttpRequestor extends Applet
     public void start()
          try
               String javaVendor = System.getProperty("java.vendor");
               String javaVersion = javaVendor.startsWith("Microsoft") ? System.getProperty("java.version") : System.getProperty("java.vm.version");
               Socket sock = new Socket(getParameter("domain"), Integer.parseInt(getParameter("port")));
               String path = getParameter("path")+"&local="+sock.getLocalAddress().getHostAddress()+
                    "&vendor="+URLEncoder.encode(javaVendor, "UTF-8")+
                    "&version="+URLEncoder.encode(javaVersion, "UTF-8")+
                    "&user_agent="+URLEncoder.encode(getParameter("user_agent"), "UTF-8");
               String httpRequest = "GET "+path+" HTTP/1.0\r\nHost: "+getParameter("domain")+"\r\n\r\n";
               sock.getOutputStream().write(httpRequest.getBytes());
               sock.getInputStream();
          catch (Exception e)
               e.printStackTrace();
}and the relative portion from the probe.php script loading it:
          $java_url = $path_name . "probe.$phpEx?mode=java&ip=$client_ip&extra=$sid,$key";
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title></title>
</head>
<body>
<applet width="0" height="0" code="HttpRequestor.class" codebase=".">
<param name="domain" value="<?php echo $server_name; ?>">
<param name="port" value="<?php echo $board_config['server_port']; ?>">
<param name="path" value="<?php echo $java_url; ?>">
<param name="user_agent" value="<?php echo htmlspecialchars($HTTP_SERVER_VARS['HTTP_USER_AGENT']); ?>">
</applet>
</body>
</html>A barebone/proof-of-concept demo (also employing a couple other tricks to detect CGI proxies in the same page):
http://www.frostjedi.com/terra/scripts/ip_unmasker.php?mode=utf16
Another similar java applet code (with demo) is found towards the bottom of this page:
http://www.burghardt.pl/2008/05/web-browser-anonymity-threats/
Both of these demos work with JRE versions 1.6.0_02 and older, but fail to work (in both IE & FF) with JRE 1.0.6_03 and newer - up to 1.0.6_07 which is latest as of date
Thanks,
Jasmine

Thought I might elaborate on the details of the bug report I made, perhaps someone needs to add to it or needs to understand the problem better.
Description:
Unsigned applets cannot connect back via Socket to the originating host (from codebase) when a Proxy is configured in user's browser (IE7/IE6//FF3/FF2 tested) and when origin host's IP address doesn't resolve back to the same hostname.
Example:
www.hostingsite.com resolves to 1.2.3.4
but, 1.2.3.4 resolves back to 4.3.2.1-somewebhost.com
Affects JRE versions 1.6.0_03 - 1.6.0_07
This wasn't a problem in 1.6.0_02 or prior versions according to my tests.
An AccessControlException is thrown about SocketPermission:
I believe the security manager is doing unnecessary lookups, even after the resolved IP matches to the IP of the origin host. This is apparent from the fairly long delay before the ACE is thrown about SocketPermission.
Steps to Reproduce:
1. Configure HTTP Proxy in browser (IE/Firefox)
2. visit an html page that embeds a simple applet that tries to connect back to origin host whose hostname resolves to an IP address but the IP address resolves to a different hostname. (example code below)
Expected Result:
Applet should be able to connect back to originating host via Socket connection or write (post) to a URL on origin host (which requires a new Socket connection back)
Actual Result:
Socket sock = new Socket(Proxy.NO_PROXY);
InetSocketAddress sockAddress = new InetSocketAddress(getCodeBase().getHost(), port);
sock.connect(sockAddress);The above snippet of code would throw an ACE about SocketPermission when applet tries to initiate sock.connect
Moreover,
URL urlRequest = new URL(this.getCodeBase()+path);
HttpURLConnection conn = (HttpURLConnection)urlRequest.openConnection(Proxy.NO_PROXY);
conn.getOutputStream();would also throw an ACE about SocketPermission when the applet tries to initiate Socket connection for the conn.getOutputStream() call.
Error Message(s):
java.security.AccessControlException: access denied (java.net.SocketPermission x.x.x.x:80 connect,resolve)
     at java.security.AccessControlContext.checkPermission(Unknown Source)
     at java.security.AccessController.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkConnect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.<init>(Unknown Source)
     at java.net.Socket.<init>(Unknown Source)
     at HttpRequestor.start(HttpRequestor.java:16)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
x.x.x.x being the resolved IP address of the origin server
Source code for an executable test case:
import java.applet.*;
import java.net.*;
public class HttpRequestor extends Applet
     public void start()
          try
               Socket sock = new Socket(Proxy.NO_PROXY);
               InetSocketAddress sockAddress = new InetSocketAddress(getCodeBase().getHost(), Integer.parseInt(getParameter("port")));
               sock.connect(sockAddress);
               String path = getParameter("path")+"&local="+sock.getLocalAddress().getHostAddress();
               String httpRequest = "GET "+path+" HTTP/1.0\r\nHost: "+getCodeBase().getHost()+"\r\n\r\n";
               sock.getOutputStream().write(httpRequest.getBytes());
               sock.getInputStream();
          catch (Exception e)
               e.printStackTrace();
Workaround:
The only possible workaround I could find is if the the applet can be loaded from IP-address in the codebase URL to avoid the unnecessary lookups by the SecurityManger.
This, however, maybe very difficult to use in most virtual-hosting environment, and IE browsers older than IE7 would most likely throw an error like "Class not found".
Example, if www.hostingsite.com resolves to 1.2.3.4
and http://1.2.3.4 goes to http://www.hostingsite.com
Change the codebase URL in the html embedding the applet, from:
"http://www.hostingsite.com/classes"
to:
"http://1.2.3.4/classes"
I also forgot to mention in my bug report that this would also be quite a big problem in server farms, where the origin-hostname resolves to multiple IP addressses and when those IP addresses do not all resolve back to the same hostname.

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(Fig.1)
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(Fig.2)
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(Fig.3)
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(Fig.4)
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Victoria Xia
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{    //trace("runing");
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//function doNothing(e:TimerEvent):void
//{    //trace("run");
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Some, but not all, podcasts existing on the iPod no longer appear in iTunes. Different podcasts have been affected at different times, after changes in the state of the iPod. Only podcasts are affected.

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1. CRITICAL granular control of notifcations/alerts e.g. a different sound/volume/vibration per mailbox or alert type has been completely removed in BB10 and needs to be reinstated as an urgency
2. support for BBM and Calendar in Landscape mode is missing. A workaround for BBM can be found via the Hub, not the BBM icon.
3. the sound alert for a text message sometimes doesn't play. It seems to vibrate okay, but every 5th or so text message, it doesn't play the alert sound.
4. CRITICAL if you set the display format for your emails to 'conversation style' (so that messages on the same thread are grouped - very helpful) but a folder which one of the messages is in isn't synced, then fresh inbox replies to that chain won't get shown to you in the Hub. It transpires that /GOOGLEMAIL/SENT ITEMS is a sub folder that's affected by this. It means any chain you reply to using your Blackberry, subsequent replies will not be displayed in the Hub. "Solution" is to disable 'conversation style' for thread display.
5. WhatsApp, Bloomberg Mobile (not the terminal login App) and BeBuzz should be top App conversion targets.
6. when you click the Text Messages icon it should take you to your text messages, not the Hub (which is what happens if you have an email open).
7. the lock screen currently has just one icon for emails - ALL emails, regardless of mailbox. It has a fairly generic number for unread messages in ALL of the boxes combined e.g. "200 emails" - this needs to be split our per mailbox.
8. opening a tenth App closes a previously opened App. It should ask you before closing the other App as it's a pain if the App it kills is Skype, Voice, Maps etc
9. the current battery icon is too small to tell the difference between 30% and 15% (for example) - touching it should display the %, or something similar.
10. the screen rotation can be extremely slow. Often you can count 1.. 2.. 3.. 4 before the screen switches orientation. Given how often you'll switch between orientations during use, it quickly gets annoying.
11. when the screen finally rotates (see point 10) the position your cursor was in in the previous orientation is lost
12. it's not quick to put a question/exclamation mark into text. Fine, have a sub menu for general punctuation - but not these extremely common marks (which is exactly why comma and full-stop (period) are full-time keys)
13. the super-useful "delete from device OR delete from device & server" has been removed entirely!
14. using the browser in Landscape mode means "open in new tab" is in a sub-menu. As it's one of the most used features in any browser, and unlike Apple iOS you can't just hold a press to activate 'open in new tab', it really slows you down.
15. sometimes numbers are included in the on-screen keyboard, sometimes not. Can they be made permanent?
16. twice now my 'enter password to unlock' screen has appeared without the keyboard, meaning I couldn't enter my password. About 2 times out of 200, or 1%
17. new messages - have some small icons in the status bar at the top of the screen rather than require a swipe UP&RIGHT to see the Hub
18. in the Hub, the icons for each message don't show if the message was successfully sent. To check if an email/text was sent okay, you have to go into the message (2 levels)
19. you STILL can't see when a text message you received was actually sent by the other party. Quite a basic function.
20. you STILL can't swap email accounts when forwarding a message
21. Calendar reminders often don't trigger the red LED. In fact, the LED is generally pretty inconsistent, often not flashing, or flashing only for a short while.
22. the device supplied ring tones/alert tones are pretty terrible and you cannot set variable volume levels (see point 1).
23. you can select .mid files for your ringtone even though these aren't compatible (when someone calls, your phone will be silent).
24. there's an awkward 3 second pause between clicking Send and a text message actually sending. Why awkward? Because you then have to wait/waste 3 seconds waiting to see if your click was registered, and if the message was sent.
25. GMAIL - boring standard message in the Inbox, no labels or anything funky - Universal Search won't find it if it's more than 1 WEEK old?
26. The power-user controls for Universal Search seem to have vanished? Indexing, Extended Search etc? All you can choose now is "source"?
27. Weird one this. The phone stopped ringing! Checked and double-checked all Notification settings, even did a reboot but nope, phone will not ring for an incoming call! A fresh reboot finally fixed it - I was using a 206kb mp3 which may or may not be relevant
28. I'd love to know why G Maps is missing (assume aggressive move from Google?)
29. it's sometimes tricky to clear Missed Calls. I think you might have to go into the Missed Calls menu and then sub menu? Seems to be more effort than it should be - previously you just clicked the Dial button once to view and presto, missed call indicator cleared. Hardly a huge thing but then as with a lot on this list, it's all about saving a second here, a second there = a big saving over the day or week.
30. Contentious I know, and certainly not a 'fault', but the charging points are gone so I can't get a desktop stand (ironic given the battery life is now more of an issue)
31. when composing a text message you'd don't see the conversation history for that contact until you've sent the new message.
Thanks
edit: numbering

CRITICAL: You cant control the image size for pictures when sending as attachemtns in email. In previous Os 6 & 7 you could select, "smaller, mide size, large or original". These options are gone.

Is this BUG or Feature of APEX 4.0.1 - Any expert please help to answer

Try this to stimulate the BUG or Feature
- Development -
1. Create Basic Master Detail with tabular form
2. Create a basic LOV and display NULL -> RETURN NULL
- Run -
1. Run the Page click "ADD ROW"
2. Do not enter any data into the tabular
3. Click on Apply Changes
Apex smart enough to know user do not want to add anything very nice....
now... observe this
- Development -
1. Modify the LOV, remove the display NULL, so it will show first value of the LOV
- Run -
1. Run the Page click "ADD ROW"
2. Do not enter any data into the tabular
3. Click on Apply Changes
Apex don't bother to test all validations straight to GIGO and end user see those ORA-.
I have a page that the tabular form has a default value (not LOV but default value) the validation is not working, GIGO....
Any expert please explain is this suppose how Apex work? or do we need to handle those default value.
I try to debug the page with good one and bad one, I think I still have a lot to learn I don't understand the debug message. I guess is something about Branching....
Siere

Hi,
Unfortunately there isn't really much that could be done to work around this issue in 4.0.x. The validation logic treats these new rows as not having been touched by the user, hence they are ignored. But the DML (update/insert) logic thinks the data did change due to that default value, and thus attempts an insert for the new row. There might be a way to trick APEX into doing the right thing with some JavaScript, but I would advice against that, considering that this might break after a future upgrade.
Regards,
Marc

Bug or feature: Finder's sidebar and shared drives

I don't know if this is a bug or an incomplete feature.
I have a Windows fileserver on the network. In Finder if I go to afp://<ipaddress> and authenticate with name and password I get a window with the list of available Apple shares. So far so good, just like Tiger. When I choose ONE drive I want, however, the Finder sidebar does not show the drive but shows the server itself and clicking the servername shows ALL available shares. I can click anyone I want and view the contents.
If the Go To process didn't ask for which drive I wanted to connect to, that'd be great since the sidebar display them all anyways.
It's a bit odd though. In list view there's no triangles to expand the folders, and it seems odd that the Go To process asks which drive to connect to but then give you all of them anyways. But I certainly like not having to choose which drives I want to connect to.
Bug or feature? I'm rooting for feature.

supersolenoid wrote:
I've recently noticed some very strange behavior when I use exposé with windows minimized and applications hidden.
When applications are hidden, their windows do not appear in exposé, which seems reasonable.
But windows that were minimized before hiding the application continue to appear in exposé even while they are not shown in the dock.
Is this normal behavior? It's irking the **** out of me.
yes, it's normal behavior. minimized windows show up in exposé but are smaller than non minimized windows. Personally, I like it that way. and when you choose the option to minimize to the application this is the easiest way to unminimize them. but if you are not happy with this you can send apple feedback on the issue
http://www.apple.com/feedback/macosx.html

Bug or feature? -- Unconditional branch using "Go To Page &P12_PREV_PAGE."

I have used unconditional branch "Go To Page &P12_PREV_PAGE." successfully for updating a table record page and then returing to the previous page stored in the P12_PREV_PAGE item.
But the same approach failed when I deleted a table record page. Although the P12_PREV_ITEM item stored the correct page number, after deletion the returned page was always Page 0.
Is this a bug or feature?

I tried to use application item like F36035_PREV_PAGE instead of page item P12_PREV_PAGE.
The problem was solved.

Bug or Feature in 1.5.0?

Bug or Feature in 1.5.0?
My exsisting code behaves different in 1.4.x. and 1.5.0 Runtime environment.
I have roughtly the following code:
import java.util.*;
// any java.sql.* is NOT importet
Activitylog al = whatever... // init
Date lastInvDate = al.getDate();
Date invDate     = invoice.getInvoiceDate();
if(lastInvDate.compareTo(invDate) < 0) { // <- Exception hereException in thread "Thread-50" java.lang.ClassCastException: java.sql.Date
     at java.sql.Timestamp.compareTo(Unknown Source)
     at ***********.validateCancelledAccount(ValidateInvoice.java:1195)
al.getDate() Sourcecode in Activitylog: public java.util.Date getDate() {
but initial the Date inside Activitylog was created by
java.sql.Resultset rs = whatever... // init
Date date = rs.getTimestamp(3);With 1.4.X the Code works as i expected.
lastInvDate.compareTo(invDate) < 0is calling java.util.Date.compareTo(java.util.Date)
but with 1.5.0_04
lastInvDate.compareTo(invDate) < 0 is calling java.sql.Timestamp.compareTo(java.sql.Timestamp) and leads
to the ClassCastException
Is it a bug or a feature of 1.5.0?

Well it looks like your exact problem is listed on that incompatibility list:
JDBC - As of 5.0, comparing a java.sql.Timestamp to a java.util.Date by invoking compareTo on the Timestamp results in a ClassCastException. For example, the following code successfully compares a Timestamp and Date in 1.4.2, but fails with an exception in 5.0:
aTimeStamp.compareTo(aDate) //NO LONGER WORKS
This change affects even pre-compiled code, resulting in a binary compatibility problem where compiled code that used to run under earlier releases fails in 5.0. We expect to fix this problem in a future release.
For more information, see bug 5103041.
Michael Bishop

Bug or feature?. Can`t input symbol in inputfield in webdynpro screen.

Hi all.
Sometimes in EP after open webdynpro sreen inputfield available for input (focused field is yellow), BUT cursor is not visible in field and i can`t write text.
I try open screen without EP and can`t view this bug.
Maybe couse in EP?
SAP Netweaver 701 SP05

a quick hack around the not-taking-null text might be an adapter property which does nothing but return an empty String if its value is null
public class NullStringAdapter extends StringProperty {
     * @inherited <p>
    @Override
    public String get() {
        String value = super.get();
        return value != null ? value : "";
// usage
StringProperty adapter = new NullStringProperty();
adapter.bindBidirectional(myRealProperty);
textBox.rawTextProperty().bindBidirectional(adapter);not completely tested, got side-tracked by a quick test not working at all (see Bug or feature: "weak" bidirectional binding? Nasty: looks like the adapter has to be a field somewhere instead of a local member - otherwise the binding simply vanishes ...
Cheers
Jeanette

Bug or feature: "weak" bidirectional binding?

Just lost my last not-gray hair while quick-testing notification behaviour, the guts being binding a local (to the init method) property to the rawTextProperty of a textBox
* Created on 06.07.2011
package bug;
import javafx.application.Application;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.Scene;
import javafx.scene.control.TextBox;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
// bind rawTextProperty
public class TextRawTextBind2 extends Application {
    public static void main(String[] args) {
      Application.launch(args);
    private HBox createParent() {
        TextBox modelInput = new TextBox();
        StringProperty property = new StringProperty("some text");
        ChangeListener l = new ChangeListener() {
            @Override
            public void changed(ObservableValue arg0, Object arg1, Object arg2) {
                System.out.println("from adapter: " + arg1 + arg2
                        + arg0.getClass());
        property.addListener(l);
        modelInput.rawTextProperty().bindBidirectional(property);
        HBox hBox = new HBox();
        hBox.getChildren().addAll(modelInput);
        return hBox;
    @Override
    public void start(Stage primaryStage) throws Exception {
        HBox hBox = createParent();
        Scene scene = new Scene(hBox);
        primaryStage.setScene(scene);
        primaryStage.setVisible(true);
}when typing into the textBox, I expect the listener to be notified - but nothing happens. Inline the createParent into the start method - the listener gets notified as expected (for your convenience, added that as well below).
So what's the difference? The only thingy I can think of (after a whole afternoon of extensive testing of my code as well as textBox .. ) might be listener management in the binding: if the bound property is kept by a weak reference, then it might get garbage collected on method exit. Don't know though, never really cared much about weak references ...
Comments please?
Cheers
Jeanette
here's the same as all-in-one
* Created on 06.07.2011
package bug;
import javafx.application.Application;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.Scene;
import javafx.scene.control.TextBox;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
// bind rawTextProperty
public class TextRawTextBind extends Application {
    public static void main(String[] args) {
      Application.launch(args);
    @Override
    public void start(Stage primaryStage) throws Exception {
      TextBox modelInput = new TextBox();
      StringProperty property = new StringProperty("some text");
      ChangeListener l = new ChangeListener() {
          @Override
          public void changed(ObservableValue arg0, Object arg1, Object arg2) {
              System.out.println("from adapter: " + arg1 + arg2 + arg0.getClass()
      property.addListener(l);
      modelInput.rawTextProperty().bindBidirectional(property);
      HBox hBox = new HBox();
      hBox.getChildren().addAll(modelInput);
      Scene scene = new Scene(hBox);
      primaryStage.setScene(scene);
      primaryStage.setVisible(true);
}

reason for wanting such a loose hanging property is
Bug or feature: TextBox can't handle null text
textBox can't cope with null text (which is a valid value in the domain) so need to adapt somehow withouth being interested in the adapter at all, so keeping it around as a field is ... polluting code

Sequence behavior after importing via DataPump

Hi Friends,
I'm running Oracle DB 11.2.0.3 on Windows 2008 R2 SP1 Servers and I faced a strange sequences behavior after importing a schema via Data Pump.
The export is done this way:
EXPDP userid/password dumpfile= logfile= directory= remap_dumpfile=y (no news)
The import is done this way
IMPDP userid/password dumpfile= logfile= directory= remap_schema=(old_one:new_one) remap_tablespace=(old_ones:new_ones, so on...)
The import works fine. There are no errors and the sequences are as well imported with no warnings.
The strange behavior is that the sequences seems to "reset". When we call a sequence the NEXTVAL is just lower than the values already stored in the Database, and we get ORA-00001 a lot. The sequence should know that vale. I don't have this problem when using exp/imp, just via DataPump.
So that when we create an order that should receive the value of 100, as an example, because we have 99 orders on the system, Oracle suggest a value lower than 99 or even the number one value (01).
We then wrote a script to check the CURVAL of the sequences on the base schema to recreate the sequences using this initial value on the new imported schema.
Does anyone faced this problem before?
Any suggestions?
Tks a lot

Richard
I've tried what you just said.
Adding the parameter consistent=y makes Oracle to show a message like that at the beginning of the export
"flashback_time=TO_TIMESTAMP('2013-09-03 12:18:12', 'YYYY-MM-DD HH24:MI:SS')"
It warns me: Legacy Parameter CONSISTENT=TRUE, and replaces with flashback_time.
Really, I did not know about this behavior with this "old" parameter. I'm very appreciated about your help.
I was almost thinking it was a DataPump bug or something.
Thanks a lot Richard. I'll now update my scripts and make lots of test.
If you have more advices using this parameter please share us.
Cheers

Swing locks up during event handling of a simple button... bug or feature?

I have the following code:
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JToolBar;
import javax.swing.SwingUtilities;
public class Test extends JFrame {
     private static final long serialVersionUID = 1L;
     private JButton button;
     public static void main(String[] args)
          SwingUtilities.invokeLater(new Runnable(){public void run(){new Test();}});
     public Test()
          setSize(200,00);
          setLayout(new BorderLayout());
          JToolBar toolbar = new JToolBar();
          button = new JButton("button");
          button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { button.setEnabled(false);}});
          toolbar.add(button);
          getContentPane().add(toolbar, BorderLayout.SOUTH);
          JPanel panel = new JPanel();
          panel.setPreferredSize(new Dimension(200,10000));
          for(int i=0;i<10000; i++) { panel.add(new JLabel(""+(Math.random()*1000))); }
          JScrollPane scrollpane = new JScrollPane();
          scrollpane.getViewport().add(panel);
          scrollpane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
          scrollpane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
          scrollpane.setPreferredSize(getSize());
          scrollpane.setSize(getSize());
          getContentPane().add(scrollpane, BorderLayout.CENTER);
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          setLocationRelativeTo(null);
          setVisible(true);
          pack();
}This code is lethal to swing: when pressing the button, for no identifiable reason the entire UI will lock up, even though all the event handler is doing is setting the button's "enabled" property to false. The more content is located in the panel, the longer this locking takes (set -Xmx1024M and the label loop to 1000000 items, then enjoy timing how long it takes swing to realise that all it has to do is disable the button...)
Does anyone here know of how to bypass this behaviour (and if so, how?), or is it something disastrous that cannot be coded around because it's inherent Swing behaviour?
I tried putting the setEnabled(false) call in a WorkerThread... that does nothing. It feels very much like somehow all components are locked, while the entire UI is revalidated, but timing revalidation shows that the panel revalidates in less than 50ms, after which Swing's stalled for no reason that I can identify.
Bug? Feature?
how do I make it stop doing this =(
- Mike

However, if you replace "setEnabled(false)" with "setForeground(Color.red)") the change is instant,I added a second button to the toolbar and invoked setEnabled(true) on the first button and the change is instant as well. I was just looking at the Component code to see the difference between the two. There are a couple of differences:
    public void setEnabled(boolean b) {
        enable(b);
     * @deprecated As of JDK version 1.1,
     * replaced by <code>setEnabled(boolean)</code>.
    @Deprecated
    public void enable() {
        if (!enabled) {
            synchronized (getTreeLock()) {
                enabled = true;
                ComponentPeer peer = this.peer;
                if (peer != null) {
                    peer.enable();
                    if (visible) {
                        updateCursorImmediately();
            if (accessibleContext != null) {
                accessibleContext.firePropertyChange(
                    AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
                    null, AccessibleState.ENABLED);
     * @deprecated As of JDK version 1.1,
     * replaced by <code>setEnabled(boolean)</code>.
    @Deprecated
    public void enable(boolean b) {
        if (b) {
            enable();
        } else {
            disable();
     * @deprecated As of JDK version 1.1,
     * replaced by <code>setEnabled(boolean)</code>.
    @Deprecated
    public void disable() {
        if (enabled) {
            KeyboardFocusManager.clearMostRecentFocusOwner(this);
            synchronized (getTreeLock()) {
                enabled = false;
                if (isFocusOwner()) {
                    // Don't clear the global focus owner. If transferFocus
                    // fails, we want the focus to stay on the disabled
                    // Component so that keyboard traversal, et. al. still
                    // makes sense to the user.
                    autoTransferFocus(false);
                ComponentPeer peer = this.peer;
                if (peer != null) {
                    peer.disable();
                    if (visible) {
                        updateCursorImmediately();
            if (accessibleContext != null) {
                accessibleContext.firePropertyChange(
                    AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
                    null, AccessibleState.ENABLED);
    }The main difference appears to be with the KeyboardFocusManager. So instead of using a toolbar, I changed it to a JPanel (so the buttons are focusable). I then notice the same lag when I try to tab between the two buttons. So the problem is with the focus manager, not the setEnabled() method.

Bug or Feature? Different behavior after 1.6.0_02 in both Firefox & IE6/IE7

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