Java JTable Screen Blink Problem.

Dear All,
I am facing Screen blink issue while using the JTable.
JTable is updated in real Time, It uses custom table model.
To update the JTable, I update the Table Model and then call the UpdateUI() and repaint(). These update process is running in non-AWTevent-dispatch thread. So, During the real Time Update of the Table, When we do some rough handling work on the Table( for example, press the Enter Key on the Table for 1-2 minutes, move the Scroll Bar up and down fastly etc), It throws the following exception and the Table starts blinking.
java.lang.NullPointerException
at javax.swing.plaf.basic.BasicTableUI.paintCell(BasicTableUI.java:1141)
at javax.swing.plaf.basic.BasicTableUI.paintCells(BasicTableUI.java:1051)
at javax.swing.plaf.basic.BasicTableUI.paint(BasicTableUI.java:974)
at javax.swing.plaf.ComponentUI.update(ComponentUI.java:142)
at javax.swing.JComponent.paintComponent(JComponent.java:541)
at javax.swing.JComponent.paint(JComponent.java:808)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
The blinking also moves to Other Components such as JTree which is doing real time update in another screen of the Same Application.
How to resolve this Screen Blinking Phenemenon ? Some suggested to use SwingUtilities.invokeLater() for UpdateUI(). But, I am concerned about the performance, using it in real time update as it may create many threads, it may cause other performance issues. Is other any other better solution ?
Looking forward to your comments !
Thanks !

To update the JTable, I update the Table Model and then call the UpdateUI() and repaint(). No need to call updateUI() (I'd like to shot the person in the forum who keeps suggesting that and shot the people who keep using the method without reading the API to see what it actually does) or repaint(). You simply update the TableModel and the table will repaint itself.
Here is a simple example of real time updates to a table from a non-GUI thread:
http://forum.java.sun.com/thread.jspa?forumID=57&threadID=597870
We can't help you because we have absolutely no idea what your code looks like

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