Detecting user leaving in Applet

Hello. I was wondering how to detect when a user leaves a page or closes their browser, using an applet. Thank you.

no longer true with regards to destroy being skipped.
Currently in 1.5 destroy is always called after close() regardless.

Similar Messages

How can detect user's click on "Back" button in browser?

Hi java gurus:
I use servlet as a controller to show pages. If user click "Back" button several times, and execute an operation in the page, at that time the attributes in the session is for the page before clicking "Back". So the operation run with the wrong data. How can I deal with this condition? Can I detect user's click on "Back"?
Thanks for any suggestion.
allan

Any request made by a client could be "stopped" after
the session has been updated with the new timestamp.
This would leave the client sitting viewing a page
that has an "out of sequence" timestamp in the hidden
field with no way to get out.Yes, the client could stop the request and have no valid unique String to submit. However, the technique is only designed to detect out of sequence pages, it does not mean the user has no way out! Remember that the server side code can respond to the fact that the request is out of sequence in any way. Certainly, they could choose to lock the user out, but more often than not it will be a more intelligent response than that.
This problem could also manifest itself if the client
makes a request of type a then changes their mind and
makes a request of type b before the type a request
has been returned.Yes, in this case the request would be considered 'out of sequence'. It's really a variation of the condition you mentioned earlier.
Any ideas?Again, the code can respond to the fact that the request is out of sequence in several different ways. It may, for example, ignore the fact that it is out of sequence if it finds the data it needs in the session store. It may force the user to start over, or any other action which makes sense -- It's going to be very application dependent.
Good luck,
-Derek

How do I hide my mailbox and mail contents from other users, leaving other functions of my iMac accessible?

How do I hide my mailbox and mail contents from other users, leaving other functions of my iMac accessible?

You don't have to shut down the computer to switch accounts. All you do is click the Apple symbol in the upper left and choose Log Out and that's it. You can also set up Faster User Switching by:
1. Open System Preferences - Accounts
2. Click Login Options
3. Check the box called "Show fast user switching menu as" then choose from either icon, short name or name.
Then when someone wants to switch users they can. The advantage of this method is if you are have a document open and don't want to close it the document will remain open. If the other user attempts to shut down the computer they can't until you have logged out thereby saving all your data.
A very simple and elegant solution.

What event fires when user "leaves" TextInput?

I need to perform some calculations on data that the user is inputting into several text inputs. I want to perform the calculations whenever the user leaves any of the TextInputs. The user could leaves the TextInput by tabbing out of the box or clicking out of the box. What event fires whenthe users leaves the TextInput boxes?
Thanks!

focusOut
Dispatched after a display object loses focus. This happens when a user highlights a different object with a pointing device or keyboard navigation.

Reputation Score Changes when users leaves a community

A strange behavior when user leaves a community in sharepoint 2013
For eg : Suppose the reputation score of user is 20 before he is leaving a community.Once he leaves the community his score becomes -21.Ok minus is fine.but when a user joins back it is still 21.
This means a user can join and leave a community any no of times and increase his reputation score. I think this is a bug
harsh damania

I agree it seems to be a BUG

Returns all values if the user leaves the valuve empty ?

is there a way to return all values if a user leaves lets say, the 'Project_no' valve empty..
Below is the bit of SQL that I'm trying to get to work..
and upper(coj.CUSTOMER_PO_NO) like upper(('%&Project_No%'))

JamesW wrote:
is there a way to return all values if a user leaves lets say, the 'Project_no' valve empty..
Below is the bit of SQL that I'm trying to get to work..
and upper(coj.CUSTOMER_PO_NO) like upper(('%&Project_No%'))And what's not working about it?
SQL> ed
Wrote file afiedt.buf
1* select * from emp where job like '%&job%'
SQL> /
Enter value for job: CLERK
old   1: select * from emp where job like '%&job%'
new   1: select * from emp where job like '%CLERK%'
     EMPNO ENAME      JOB              MGR HIREDATE                    SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17-DEC-1980 00:00:00        800                    20
      7876 ADAMS      CLERK           7788 23-MAY-1987 00:00:00       1100                    20
      7900 JAMES      CLERK           7698 03-DEC-1981 00:00:00        950                    30
      7934 MILLER     CLERK           7782 23-JAN-1982 00:00:00       1300                    10
SQL> /
Enter value for job:
old   1: select * from emp where job like '%&job%'
new   1: select * from emp where job like '%%'
     EMPNO ENAME      JOB              MGR HIREDATE                    SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17-DEC-1980 00:00:00        800                    20
      7499 ALLEN      SALESMAN        7698 20-FEB-1981 00:00:00       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-1981 00:00:00       1250        500         30
      7566 JONES      MANAGER         7839 02-APR-1981 00:00:00       2975                    20
      7654 MARTIN     SALESMAN        7698 28-SEP-1981 00:00:00       1250       1400         30
      7698 BLAKE      MANAGER         7839 01-MAY-1981 00:00:00       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-1981 00:00:00       2450                    10
      7788 SCOTT      ANALYST         7566 19-APR-1987 00:00:00       3000                    20
      7839 KING       PRESIDENT            17-NOV-1981 00:00:00       5000                    10
      7844 TURNER     SALESMAN        7698 08-SEP-1981 00:00:00       1500          0         30
      7876 ADAMS      CLERK           7788 23-MAY-1987 00:00:00       1100                    20
      7900 JAMES      CLERK           7698 03-DEC-1981 00:00:00        950                    30
      7902 FORD       ANALYST         7566 03-DEC-1981 00:00:00       3000                    20
      7934 MILLER     CLERK           7782 23-JAN-1982 00:00:00       1300                    10
14 rows selected.

Detect user's smtp host?

Hello,
For school we're working on a Java Applet which has to send an e-mail to the webmaster each a user asks for a username and password. We already have a working class, sending the mail using the smtp server from our ISP is no problem, but when a user somewhere else in the world (who doesn't use the same SMTP server) want's to send mail, it doesn't work, of course, because he can't access "our" smtp server. So we have to find a way to detect the user's smtp server, right? Or is there another possibility? How?
Thanks in advance for your help!
Koen.

Think about every email client that you have ever setup. Have any of them ever tried to detect the SMTP server for the user, or, does the user have to manually enter in the address of the servers, along with login and addressing information, as a part of the setup process? (this of course excludes application packages that are preconfigured)
I'm sure that someone will come back with a method to try to detect the server that will probably work most of the time or maybe even all the time for a specific environment.
Personally, I have always considered knowledge of the server address as one of those basic things you need to know to send email. Like having to know the email address of the person you want to send a message to.
By the way, how do you plan on getting around the applet security issues that always seem to come up?

Detect user event and session expiration

Hi,
Can we monitor the time gap between user events in a flash
movie. This is to detect when the user doesn't do anything, or
leave, and his/her logged profile is still open in the flash movie
on the browser. So to avoid to have inappropriate use of the logged
profile by a third party, then the flash movie could detect if
there is no activity for 5 min. then redirect to the login screen.
Does a case like that need an actionscript timer ? Have you
seen any examples of that?
Thanks,
Marty

You don't.
You might be able to use the session for this. You could have an Object that gets notified when the user session is unbound. This would atleast close your stuff after the session times out if the user closes the browser.
Take a look at http://java.sun.com/products/servlet/2.2/javadoc/javax/servlet/http/HttpSessionBindingListener.html

Need to detect window event for applet

I have an applet that needs to communicate with a servlet telling the servlet to logout once the parent window (web browser) is closed. I am new to programming with GUI's involved so I apologize for any ignorance. I have been searching for an answer on solving this problem for a while and have so far been able to write a simple applet that sends a message back to the servlet once the browser is closed by implementing the stop() function -- however it sends the same message when the back button is pressed. I need to message to be sent only when the browser is closed out.

Applets aside, there is no way to tell the server
when the remote user closes their browser. That’s
just one of the pits falls of web applications.
Now, in your applet, if it's possible to catch some
sort of window closing event when the browser closes
(and keep in mind I don't know if this is even
possible) then in the applets closing event you may
be able to use a URL object to post to your Servlet.That is what I was hoping to achieve -- I had defined my own stop() method which sent out a logout request to the servlet using the URL object... but it gets called every time a new page is requested. I also tried doing this in the destroy() method after reading that stop() should be called whenever a new page is requested to pause execution and that destroy() should be called when the object is reclaimed. This does not work how I expected in IE as it gets called each time a new page is requested -- must be destroyed and recreated every time.
In the URL you can pass some type of ID that uniquely
identifies your user. When the Servlet receives the
request from the applet you can parse out the ID from
the request and invalidate the users session,
essentially logging them out.I don't have to worry about a unique ID as this servlet only serves a single user at a time -- on first connection it locks the servlet and will report to other users that it is busy.
One other possible solution that I just found is the
following:
<script language="javascript">
window.onbeforeunload = function (evt) {
var message = 'Are you sure you want to leave?';
if (typeof evt == 'undefined') {
evt = window.event;
if (evt) {
evt.returnValue = message;
return message;
</script>This JavaScript function catches the window closing
event. From this function you would have to use the
JavaScript XMLHttpRequest object to send an
asynchronous request to your servlet (read up on
AJAX). Again, in the request you would need to pass
your ID to uniquely identify the user that you want
to log out.I will have to look at this -- although I want to do this in an applet that does not mean that would be the only solution that exists.
Either way it’s not going to be simple. Cheers.
-S

Detect when leaving site

Is there a way to detect when a user is leaving a site and
cause a pop up warning window in Cold Fusion?

Probably not, given that there are so many ways to do it.
Plus, if someone is leaving the site using a method you didn't
provide, it's probably intentional and all the pop up will do is
annoy him.

Mac user leaves open temp files, dsstore fil on Windows 2003 server network

Our Mac user (Tiger - 10.4.8) leaves temporary open files and ds store files in the folders wherever he accesses an office file. He doesn't see them when he reopens the folder, but the Windows PC users see his 'footprints' everywhere. Is there a setting or update for his ibook?

I have not tried this myself, but here's an article on how to disable this.
http://docs.info.apple.com/article.html?artnum=301711

C3PO - Scanning a Folder & Detecting user's "drag-and-drop" operations

We are using Novell C3PO to export messages in XML format when the user
press a button at the GroupWise Client message window, and this was done to
provide an integration with a ERP software (from a very famous company here
in Brazil), so the user reads his emails and can click this button and open
the ERP ORDER SCREEN with all costumer's data filled in, that increases the
productivity of the Sales Departament.
REsuming, the main porpouse is to collect information of each email to open
the Order Screen of the ERP system, without having to type everything again.
The costumer wanted to go on and get several messages at the same time, that
was stored on a GroupWise Folder, using a simple redirection rule and this
was done using Visual Basic (called here "looking process"), that looks for
messages into a specific folder in the GroupWise Client called "_Send". So,
convert that messages to XML and then move to another folder called
"_History".
Now we can drag many messages at the same time to the folder _Send and then
they will be converted. It is working very well. The problem is that the
GroupWise Client computers are becoming slower because of the "looking
process" (that VB application). We used VB because we could not find a
process or a feature in C3PO that selects several messages at the same time
and read them one-by-one.
QUESTIONS :
1- Can I have this "Looking Process" using C3PO tools ?
2- Is there a way to detect a "Drag-and-Drop" event in the GroupWise Client
with C3PO, so I would not need to scan those folders ?

Jose Calil Nassur wrote:
> We are using Novell C3PO to export messages in XML format when the user
> press a button at the GroupWise Client message window, and this was done to
> provide an integration with a ERP software (from a very famous company here
> in Brazil), so the user reads his emails and can click this button and open
> the ERP ORDER SCREEN with all costumer's data filled in, that increases the
> productivity of the Sales Departament.
> REsuming, the main porpouse is to collect information of each email to open
> the Order Screen of the ERP system, without having to type everything again.
>
>
I've been doing something similar, but rather than creating a new
message, I've been using custom properties
on each mail, so as they arrive I add two tags, one with a tagID, and
the other with metadata. I then write
searches for each folder returning only the message that are yet to be
tagged. Nice and efficient, written
in C#. I've run over my big mailbox (2GB) and the box hardly raises a sweat.
Sincerely,
Adam Bradley
Identity Concepts
Mobile : +61 419 637 518
email : adam_j_bradley \at\ identityconcepts.com.au
irc: #nidm on freenode.net
Web : http://www.identityconcepts.com.au

Best practice for detecting session expiration for applets?

Hello,
I'm not sure where I should have posted this question, please forgive me if this is not the place:
http://forum.java.sun.com/thread.jspa?messageID=4105439
I appreciate any ideas.
Thanks.
-Dennis

More information:
The code I'm using to get the response code always comes back with http status 200. The very next line:
    ObjectInputStream result = new ObjectInputStream (in);Is the one that generates the exception of EOF on stream.
Makes perfect sense... I just wish I had a reliable way of detecting at the applet level when the session has expired...
On the server side I get an exception as it is attempting to send the client the login form, but of course the applet is trying to send an object and the server chokes:
Feb 16, 2006 8:35:47 AM org.apache.catalina.connector.CoyoteAdapter
service
SEVERE: An exception or error occurred in the container during the request processing java.lang.NullPointerException
        at
org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:324)
        at
org.apache.catalina.authenticator.FormAuthenticator.saveRequest(FormAuth
enticator.java:487)
        at
org.apache.catalina.authenticator.FormAuthenticator.authenticate(FormAut
henticator.java:236)
        at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authenticator
Base.java:490)
        at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:126)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:105)
        at
org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:
419)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:107)
        at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:1
48)--------
Any ideas are greatly appreciated.
Thanks.
-Dennis

How do I detect user's Operating System?

Hello,
I was wondering if there is an amazing bit of actionscript
out there that allows flash to detect the user's operating system,
and from there then open the correct install version of adobe
reader (basically just several different .exe files which I already
have downloaded).
I am using actionscript 2.0.
Appreciate any help!
Thanks

trace(System.capabilities.version);
Dave -
www.offroadfire.com
Head Developer
http://www.blurredistinction.com
Adobe Community Expert
http://www.adobe.com/communities/experts/

Can I User IO in Applet?

Hi Everybody,
I am new to applet.
Can I user IO or Socket in Applet?
Thanks in Advance

You could not access any of client resources from applet, unless your applet is "SIGNED"
to sign applet you can refere to java tutorial page:
http://java.sun.com/docs/books/tutorial/deployment/jar/signindex.html
Thanks
Ahmad Elsafty

Detecting user leaving in Applet

Similar Messages

Maybe you are looking for