How to disable/enable the cells for editing column wise in JTable in java?

Hi All,
Can any one tell me how to disable the cells for editing by column wise in JTable?
Here depending upon the radio button selected, I need 2 disable some columns for editing
and enable some columns for editing?
how can I do tat using JAVA?
Any sample code is of great help to me.
Thanks in Advance

http://java.sun.com/docs/books/tutorial/uiswing/components/table.html
~

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