AddEventListener() twice to the same object

Does anyone know if I have two lines of code in a document
class:
btnSlideOpen.addEventListener(MouseEvent.CLICK, openMe);
btnSlideOpen.addEventListener(MouseEvent.CLICK, openMe);
Does this mean that there are two event listeners attached to
btnSlideOpen? Or just one...my tests seem to suggest that only one
event listener is setup since the parameters are the same (the
second addEventListener() causes a new event listener to replace
the first one)...but in respect to memory management I wanted to
confirm...
Thanx in advance!

If you added the subscribed calendars at Settings > Mail, Contacts, Calendars, you remove a subscribed calendar at the same location.
Select the subscriber calendar that you want to delete under Accounts and select Delete Account.

Similar Messages

Multiple inserts for the same object

We have observed that in certain cases, the same object is attempted to be inserted twice, resulting in Primary Key violation.
Here is one example -
A(1->1)B, unidirectional, A has the foreign key to B
new B
copyB = register(B) (also assign sequence number)
new A1, A2
A1.set(copyB), A2.set(copyB)
register(A1), register(A2)(also assign sequence number)
commit
it tries to insert the same B twice.
any clues whats wrong here?
thanks

Any chance your 1:1 from A to B is marked as privately-owned?
This would indicate to TopLink that the object in each relationship is unique and should be inserted.
Doug

Does not do the sorting if I click twice to the same column.

Hello
I am new to winforms.
I have a listview. I want it to toggle the sorting of the records of the listview when the columns are clicked
Please guide me as to how to do the same.
The code that I have attached does not do the sorting if I click twice to the same column. I have to click a different column ten the previous column
The code is attached below
regards
Manoj Gokhale
private void SiteInChargeorSupervisor_Load(object sender, EventArgs e)
this.listView1.ColumnClick += new ColumnClickEventHandler(listView1_ColumnClick);
private void listView1_ColumnClick(object sender, ColumnClickEventArgs e)
ListViewSorter Sorter = new ListViewSorter();
listView1.ListViewItemSorter = Sorter;
if (!(listView1.ListViewItemSorter is ListViewSorter))
return;
Sorter = (ListViewSorter)listView1.ListViewItemSorter;
if (Sorter.LastSort == e.Column)
if (listView1.Sorting == System.Windows.Forms.SortOrder.Ascending)
listView1.Sorting = System.Windows.Forms.SortOrder.Descending;
else
listView1.Sorting = System.Windows.Forms.SortOrder.Ascending;
else
listView1.Sorting = System.Windows.Forms.SortOrder.Descending;
Sorter.ByColumn = e.Column;
listView1.Sort();
public class ListViewSorter : System.Collections.IComparer
public int Compare(object o1, object o2)
if (!(o1 is ListViewItem))
return (0);
if (!(o2 is ListViewItem))
return (0);
ListViewItem lvi1 = (ListViewItem)o2;
string str1 = lvi1.SubItems[ByColumn].Text;
ListViewItem lvi2 = (ListViewItem)o1;
string str2 = lvi2.SubItems[ByColumn].Text;
int result;
if (lvi1.ListView.Sorting == System.Windows.Forms.SortOrder.Ascending)
result = String.Compare(str1, str2);
else
result = String.Compare(str2, str1);
LastSort = ByColumn;
return (result);
public int ByColumn
get { return Column; }
set { Column = value; }
int Column = 0;
public int LastSort
get { return LastColumn; }
set { LastColumn = value; }
int LastColumn = 0;

Every time through the ColumnClick event handler, you are creating a new sorter. This means that any values set in the sorter from the previous click are not saved.
Try this.
private void listView1_ColumnClick(object sender, ColumnClickEventArgs e)
// Only create a new sorter if we don't have one already.
if(listView1.ListViewItemSorter == null)
ListViewSorter Sorter = new ListViewSorter();
listView1.ListViewItemSorter = Sorter;
// And so on with the rest of your code.

Can someone please tell me why when I order an Itunes app. , do I always get charged twice for the same thing. It has happened on two different occasions. Does it have anything to do with having 2 different ipods linked to the same account?

Can someone please tell me why when i order an app on my sons ipod, do I get charged twice for it? When I tried do report a problem with the charge, it said that I can not get a refund on that item. This is the second time this has happened to me. Does it have anything to do with having more then one ipod linked to the same account? Thanks for any help you can give me!!!

It has nothing to do with have more than one device using that account.
After you purchase it once, you redownload it on other devices by the following, not like purchasing a new app.
Downloading past purchases from the App Store, iBookstore, and iTunes Store
If you really got charged twice for purchases the same app twice with the same account contact iTunes again by:
Apple - Support - iTunes - Contact Us
Make sure that they are really the same app first.

How do I use multiple classes to access the same object?

This should be staightforward. I have and object and I have multiple GUIs which operate on the same object. Do all the classes creating the GUIs need to be inner classes of the data class? I hope this question makes sense.
Thanks,
Mike

public final class SingletonClass {
private static SingletonClass instance;
private int lastIndex = 10;
public final static SingletonClass getInstance()
if (instance == null) instance = new SingletoClass();
return instance;
public int getLastIndex() {
return lastIndex;
}1) This won't work since one could create a new SingletonClass. You need to add a private constructor. Also, because the constructor is private the class doesn't have to be final.
2) Your design isn't thread-safe. You need to synchronize the access to the shared variable instance.
public class SingletonClass {
    private static SingletonClass instance;
    private static Object mutex = new Object( );
    private int lastIndex = 10;
    private SingletonClass() { }
    public static SingletonClass getInstance() {
        synchronized (mutex) {
            if (instance == null) {
                instance = new SingletonClass();
        return instance;
    public int getLastIndex() {
        return lastIndex;
}if you are going to create an instance of SingletonClass anyway then I suggest you do it when the class is loaded. This way you don't need synchronization.
public class SingletonClass {
    private static SingletonClass instance=new SingletonClass();
    private int lastIndex = 10;
    private SingletonClass() { }
    public static SingletonClass getInstance() {
        return instance;
    public int getLastIndex() {
        return lastIndex;
}If you don't really need an object, then you could just make getLastIndex() and lastIndex static and not use the singleton pattern at all.
public class SingletonClass {
    private static int lastIndex = 10;
    private SingletonClass() { }
    public static int getLastIndex() {
        return lastIndex;
}- Marcus

How can I use the same object in the different jsp files?

I am doing a project. I have finished my jave source files and compiled them successfully. And I also wrote a main method to test my classes, they also worked well. Now I am trying to use my jave code in the jsp files. But I meet a problem, in my method of java source file, I can generate a object of a class, and use it in the whole main method. But in the different jsp files, how can I do same thing?
For example, in the .java file,
Vector vl = new Vector();
While ...{
vl.add(...)
In each of my .jsp file I want to do one loop of the above, meanwhile I want to do that in the same object.
I hope you can understand what I mean. Really need your help!

put your object into a session and you can the use it in all the jsps as long as the session is valid. Or you could create a static variable in the class that only creates one instance off an object and then create a static method to return this object.

The same Object Version Number for the same person id multiple times

Hello all,
I am currently facing an issue with HRMS tables and the object version number for employees. I am trying to write a report but due to the same object version number for the same person appearing in several row i am getting duplicate information. For example,
person id 91 object version number 32 is on 4 rows and i have no idea why...help please guys, I'm at a lost so far 50 people are facing the same issue.

Hi Baal666bobo,
The person table is date-tracked, so the PK has effective start and end dates as well.
Get the correct record with sysdate(or any particular date) and then check the OVN.
Cheers,
Vignesh

HT1420 I purchased new computers twice within the same year because they old were damaged in a storm. However, I can't deauthorize/reauthorize the new computers. How do I deal with this situation.

I purchased new computers twice within the same year because they were damaged in a storm. However, I can't deauthorize/reauthorize the new computers because it has been less than a year. How do I deal with this situation?

BrianBlaze wrote:
I have 3 Computers at home, I am studying computer sciences and am constantly rerformatting my computers, installing windows and linux over and over again.... EVERYTIME I reformat I have to authorize the same computer and so it takes up one of my 5 authorized computers... Anyways after deauthorizing all my computers in september I was not aware I couldn't do it for another year (why does APPLE assume these stupid tactics prevent piracy). Anywysw I need to reach apple and have them make it so I can do it again. I had a similar problem with Playstation and when I called them they fixed it for me... even windows (which you can only have one serial per computer) made it easy because all I had to do was call them and they fixed it for me. Now I need APPLE to do the same and this is the only place I could see to actually say what is going on... I can't believe I have to do this with my iPhone... I wanted an mp3 player and a phone together and if I can't put new songs until September 20, 2012 I am going to freak out!
HELP!
Brian
Try this link: http://www.howtogeek.com/howto/23974/beginner-deauthorize-all-computers-associat ed-with-your-itunes-account/

Multiple Transports for the Same Object.

I have ABAP program 123 and I make a change, create transport A and release the transport. I do not request transport A go to production.
I then modify ABAP program 123 again, create transport B and release the transport. I do not request transport B go to production.
Now I request transport A go to production.
Can someone explain to me why the changes in transport B are included when transport A is moved to production?
I thought each transport would be at its own change level.
Thank-you.

I can guarantee all of you that when Transport A was moved, it contained changes that were made in Transport B.
Surely you understand that Thomas is correct and that there's a logical reason, not related to transport layer configuration, for the issue? You CAN have multiple transports open for the same object without a lock by forcing it but check the dates as already suggested...

Can we have multiple transports for the same object.

Hi guys,
Can we have multiple transports for same object in dev system. Can anyone tell me how can this be done.
Thanks

Its not possible for the same development object. Only 1 person can access an object at a time and if mutiple users modify an object new TASKs are created under the same TRANSPORT.
Only after releasing the tr you can create a new tr on the same object.
Message was edited by:
Abhishek Jolly

Two Threads Sharing the Same Object

I am learning Java multithreading recently and I really hit the wall when I came to synchronizing data using the synchronized keyword. According to the explanation, synchronized will only work when 2 or more threads are accessing the same object. If there are accessing 2 different objects, they can run the synchronized method in parallel.
My question now is how to make sure for synchronized method to work, I am actually working with the same and only one object??
Imagine this:
Two person with the same account number are trying to access the very ONE account at the same time.
I suppose the logic will be:
Two different socket objects will be created. When it comes to the login or authentication class or method, how can I make sure in term of object that the login/authentication class or method will return them only ONE object (because they share the same account), so that they will be qualified for using the synchronized method further down the road?
Thanks in advance!

Actually your understanding is wrong. Consider:
public class MyClass {
private int someInt;
private float someFloat;
private synchronized void someMethod(final int value) {
    if (value > 2000) someInt = 2000;
private synchronized void someOtherMethod(final float value) {
    if (value > 2.0) someFloat = 1.999f;
}YOu might think that two different threads can enter this code, one can enter in someOtherMethod() while one is in someMethod(). That is wrong. The fact is that synchronization works by obtaining synchronization locks on a target object. In this case by putting it on the method declaration you are asking for the lock on the 'this' object. This means that only one of these methods may enter at a time. This code would be better written like so ...
public class MyClass {
private int someInt;
private float someFloat;
private void someMethod(final int value) {�
    synchronized(someInt) {
      if (value > 2000) someInt = 2000;
private void someOtherMethod(final float value) {
    synchronized(someFloat) {
      if (value > 2.0) someFloat = 1.999f;
}In this manner you are only locking on the pertinent objects to the method and not on 'this'. This means that both methods can be entered simultaneously by two different threads. However watch out for one little problem.
public class MyClass {
private int someInt;
private float someFloat;
private void someMethod(final int value) {�
    synchronized(someInt) {
      if (value > 2000) {
        someInt = 2000;
        synchronized (someFloat) {
          someFloat = 0.0f;
private void someOtherMethod(final float value) {
    synchronized(someFloat) {
      if (value > 2.0) {
        someFloat = 1.99999f;
        synchronized (someInt) {
          someInt = 0;
}In this case you can have a deadlock. If two threads enter one of these methods at the same time one would be waiting on the lock for someInt and the other on the lock for someFloat. Neither would proceed. The solution to the problem is simple. Acquire all locks in alphabetical order before you use the first.
public class MyClass {
private int someInt;
private float someFloat;
private void someMethod(final int value) {�
    synchronized (someFloat) {
      synchronized(someInt) {
        if (value > 2000) {
          someInt = 2000;
          someFloat = 0.0f;
private void someOtherMethod(final float value) {
    synchronized(someFloat) {
      if (value > 2.0) {
        someFloat = 1.99999f;
        synchronized (someInt) {
          someInt = 0;
}In this manner one thread will block waiting on someFloat and there can be no deadlock.

Required report for the invoice processed twice for the same PO & Vendor

Hi SAP MM experts,
I want a report which is to identify the same invoice processed twice against the same vendor and same PO which system cannot detect only because the invoice numbers are manually entered slightly different, and that is why I also want to include the document date of the invoice so that the possibility of identifying the duplicated invoices is increased.
Any help will be highly appriciated.
Thaks in advance
Sachin Patil

You might also refer reports ME80RN,ME2N,ME2L for purchase order or refer report MIR5 for vendor.
Also refer report FBL1N - vendor open items,Check for document type - 'RE'
Whether check for double invoice is ticked accounting view of vendor master ? or else
Check double invoice is configired for which combination in LIV SPRO ?

I was charged twice for the same order!

I was charged twice for the same item; once for my online pre-order through BestBuy.com and again when I picked up the item at the Best Buy Store.
I pre-ordered an Xbox One - Day One Edition from BestBuy.com on 09/02/2013. I scheduled to pick up the item at the Best Buy Store in Eden Prairie after the Microsoft release date of 11/22/2013. On 11/25/2013 I arrived at the Eden Prairie Best Buy excited to pick up my Xbox One - Day One Edition.
The Best Buy staff had difficulty linking the pre-order to the in-store pick up. They couldn't confirm if I already paid for the item through BestBuy.com. They asked for my various email addresses and phone numbers and I was required to show them my ID which matched the name on the sticker which was placed on the side of the pre-ordered item. I waited 10-15 min at the checkout until the 3 Best Buy employees troubleshooting the transaction were satisfied. Little did I know, I was being charged twice for the same item! Once for my online pre-order through BestBuy.com and again at the store when I was picking up my item! The worst part is that during the confusion during the in-store pickup, the Best Buy staff created a new transaction ticket to complete the checkout. This created a new entry in their system which claimed that I picked up two Xbox One - Day One Editions! I would like to point out that the Day One Edition could only be obtained through the pre-order process, and only one pre-order was allowed per person! (This was Best Buy's Policy) My transaction involved only one pre-order number! (removed per forum guidelines) This makes it impossible to sell me (2) Xbox One - Day One Editions.
On 11/25/13 I received 2 paper documents along with (1) Xbox One - Day One Edition with serial number: (removed per forum guidelines) from the Eden Prairie Store.
1. A Best Buy Pick-up Acknowledgement for $536.36 for order number (removed per forum guidelines). This document did not contain a serial number for the item. The document was printed at 6:31PM.
2. A standard Best Buy receipt for $536.36 printed at 6:35PM. (4 minutes after the first document) This document did contain a serial number for the item: (removed per forum guidelines).
Now for the two charges:
1. The first charge on my card ending in 8754 was on 11/22/13 for $536.36 from BestBuy.com.
2. The second charge on my card ending in 8754 was on 11/26/13 for $536.36 from Best Buy Eden Prairie.
I noticed the additional charge error after I returned the item (that I was charged twice for -Serial Number: (removed per forum guidelines) on 01/02/14. I checked my account to make sure I was refunded and I noticed I was charged twice. At this time I spoke with the Best Buy Customer Service at the Best Buy Eden Prairie Store. They recommended I call the Best Buy number on the receipt to sort it out. I called the number and due to the holiday congestion I was unable to connect with a Best Buy Representative after waiting for an hour. I again contacted the Best Buy Customer Service at the Eden Prairie Store and they recommended I file a claim with my bank.(Wellsfargo)
I filed a claim with WellsFargo ((removed per forum guidelines)) but after 4 weeks the issue did not get resolved.
After the Wellsfargo claim failed I filed two new claim numbers with Best Buy in hopes that working with Best Buy:
1. Best Buy Claim # (removed per forum guidelines)
2. Best Buy Claim # (removed per forum guidelines)
I also printed the following documents on 06/1/14 and presented them to the store manager for review:
-Bank account statement showing the two charges 4 minutes apart.
-A Best Buy Pick-up Acknowledgement
-A standard Best Buy receipt
-The return slip from the return on 01/02/14.
-Screen captures of my email pre-order acknowledgement
-Screen captures of my email pick-up acknowledgment.
After spending 2 hours at the service desk I was denied a refund because Best Buy claimed two Xbox One -Day One Edition's were purchased by me, 4 minutes apart, however, Best Buy could only provide one serial number for the transaction. I stated that the claim could easily be settled if they provided the two serial numbers in their system that were sold to me with my signatures. They could not. It is frusterating as the customer because I know there was only one serial number involved in the transaction.
I then filed a claim with the Better Business Bureau. Best Buy responded that their records show no inventory adjustments therefore they will not issue a refund. To prove that they sold me two xboxs they could simply provide the two serial numbers that they received payment for. Best Buy will not do this because they know they only have proof of one serial number in the transaction.
I consider Best Buy's response unethical. I don't want to believe that they are in the business of stealing but their lack of understanding and willingness to entertain the possibility that they made a mistake is convincing me otherwise. If you can't prove you sold two items, you have no business in charging for two items. I can prove that I have been charged twice in error. I was also disappointed that they did not address the facts in my claim. Best Buy is losing a customer of over 20 years.
Thank you for your time in reading my message.

Hello Consumer777,
I sincerely appreciate the amount of detail you’ve provided in your post. It appears you’ve been dealing with this scenario for quite some time, and I thank you for bringing it to our attention on the forums.
I’ve reviewed your case history with Best Buy in regards to this issue, as well as the details of the Better Business Bureau (BBB) case that was opened. We provided our definitive response to the BBB and Best Buy’s decision on the matter has not changed.
Thank you for sharing your feedback on the forums.
Sincerely,
Brian|Senior Social Media Specialist | Best Buy® Corporate
Private Message

Have an imac with snow leopard and Firefox 3.6.13. On a prompt downloaded and installed Firefox 3.6.16. Firefox opening Screen still shows 3.6.13. Have done this twice with the same result. Any help?

Imac, processor Intel core i3, Mac OS X version 3.6.6.
On opening Firefox 3.6.13 firefox screen suggests downloading latest version. Have downloaded and installed Firefox 3.6.15 (sorry typing error in previous entry). On opening Firefox, screen still shows 3.6.13 as the operating version although "Get info" shows that updating has been done. Thinking I may have made a mistake I have done this twice with the same result. The screen is still telling me to update.
Not really a problem using Firefox but I would like to know which version I am using.

Your user agent in the More system details list shows that you have the Firefox 3.6.15 version
*Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-GB; rv:1.9.2.15) Gecko/20110303 Firefox/3.6.15
Where do you see "3.6.13" ?

Opening a pdf file twice in the same screen

How can I open a pdf file twice in the same screen so that they are side by side?

In Adobe Reader try the menu Window > New Window

AddEventListener() twice to the same object

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