JComboBox as a cell in Jtable

Hi
I added JComboBox objects as the cell values for some specific rows of a JTable.
But when I click on the combobox for the value selection, expansion is not visible. Ineterestingly, I figured out it is expanding, but at the behind the table.
I mean if last row of the table has a combobox with more values(the list length exceeds table boundaries), broken values list is displayed from the border of the table.
So it appears other combo boxes are also expanded but behind the table.
Can any one help how to make this expansion visible.?
Thanks

Read the JTable API and follow the link to the Swing tutorial on "How to Use Tables" for working examples of using a combo box in a table.

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