Problem with JTable and JComboBoxes in cells

Hello,
I've build a Table with static comboboxes in the first row. These comboboxes are static because they are used to filter the content of the table.
I extended AbstractTableModel for the data handling and I use the DefaultCellRenderer for combobox handling.
So far everything works fine. But if I gain focus to one combobox and then click to another cell (either table cell or another combobox) i receive a NullPointerException from within the component:
java.lang.NullPointerException
     at javax.swing.plaf.basic.BasicTableUI$MouseInputHandler.adjustFocusAndSelection(Unknown Source)
     at javax.swing.plaf.basic.BasicTableUI$MouseInputHandler.mousePressed(Unknown Source)
     at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
     at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
     at java.awt.Component.processMouseEvent(Unknown Source)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Window.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)The problem is, that no error is visible on client side! I just see the NullPointerException in my console but no GUI Errors occur.
Actually I could leave the table as it is now because there are no obvious errors but I don't think its a good job to ignore exceptions.
Does anyone see where this problem could come from????
Do I have to extend the BasicTableUI somehow because the exception is thrown in there???
Thanks for any help!
Bye Jan

Hi brad,
I'm using eclipse and java1.4.2_06. Isn't it enough to write the program arguments to the run configuration in eclipse?!
I tried that but it didn't work out, I get the same error msg. :(
But I can say that whatever happens inside the UI, the exception is thrown before I receive a mouseClicked event on the table itself. I added some kind of dummy mouse listener to the table that only prints the events to the console. Is the cell renderer or cell editor using is own MouseAdapter?
You said: ...consume the event so the table won't react....
How could I catch this MouseInputHandler???
Thanx!
Jan

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If you reuse the panel and scroll pane throughout the application,
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Hello,
i have a selection problem with JTable. I want to allow only single cell selection and additionally limit the selection to the first column.
I preffered the style from MS Outlook Express where you can select the email accounts to edit.
It is a table like this:
Account name |   Type |   ...
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Hotmail       |   POP3 |
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Thanks.
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Hi,
I have encountered a problem with JTable, i am trying to display some 15 columns and their values , one of the columns value is null, then the JTable is not displaying its value from this column(which is with null value) onwards.
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I don't know If I can fix your problem, but
I know just that it works on my PC.... It's very very
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Hello Zhong Li,
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There are thousands of posts on the BugParade, but
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The "INVOKE LATER" button does the same thing,
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import java.awt.BorderLayout;
import java.awt.Cursor;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
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private static Cursor done = Cursor.getDefaultCursor();
JFrame frame;
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frame = new JFrame (title);
buttons = new JButton[5];
buttons[0] = new JButton ("BUSY");
buttons[1] = new JButton ("DONE");
buttons[2] = new JButton ("SLEEP");
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Message was edited by: remaia

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Dear !
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I logged in SAP system with user Basis01 (with email u1Afes.com ) -> then,using tcode SBWP -> new message -> send to u2Afes.com with Internet Mail type and then status message with green light -> sending ok
and then I have used Microsoft Outlook 2007, I logged with account u2 ->check email -> Ok. I saw message which send from u1
Finally, My problem is how can receive mail in SAP system without using Microsoft Outlook
For example:
Login system SAP with Basis01 account (with u1Afes.com ) -> tcode SBWP ->New Message -> send to u2Afes.com
and then
Login system SAP with Basis02 account (with u2Afes.com ) -> tcode ??? ->
To receive email from Basis01 (with u1Afes.com )
Please help me now
Thanks
I replace "@" with "A" because of banning email of this forum.
This quote is about sending email in local network. And we can't receive any email from the outside email address. Addition if I wanna send email to internal email in Internet (we've just tried with email address in local network) What should I config in SAP and Exchange ?
By the way, Is SAP Server IP added to Relay Agent for sending or receiving mail ?
Regards
An NLP
Edited by: An NLP on Apr 6, 2010 7:03 PM

Hi,
This problem is a classic problem of mail routing via Exchange. Exchange like most mail servers use the domain part of the email address as a means to route mails. So I will make an assumption that your main company mail addrss is "User @ fes.com".
So when you send a mail to the "User @ fes.com mail" address the mail is delivered to your Outlook mail address as this is the default route for company.
(Q) So how do you get your Exchange server to relay the mail into the sending SAP system?
(A) The easiest way would be to setup and unique mail domain for your SAP system. I always recommend "user @ client.sid.company.com" which in your case would be "u1 @ 100.PRD.fes.com". You can then instruct Exchange to send any emails addressed to 100.PRD.fes.com domain to your SAP system. Also using this format of address you can configure multiple mail connections into multiple SAP systems.
(A) Another answer would be to enter the "Full" email address (LOcal and Domain part of address) into the routing rule for Exchange e.g. "U1 @ fes.com" so that all emails addressed to this user will be delivered into SAP. However this method requires a lot of Admin as you will have to update Exchange with ALL email address that need to receive emails. Also if your corporate mail address is "U1 @ fes.com" then all mails will be forwarded to SAP.
I would definitely NOT recommend this method but the decision is up to you.
P.S. The IP address of the SAP system is entered into the mail header of the email. This is standard practice in SMTP relay. You can suppress this header in Exchange
Hope this helps
Michael

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