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Home/ Questions/Q 5942263
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Editorial Team
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Editorial Team
Asked: May 22, 20262026-05-22T16:13:42+00:00 2026-05-22T16:13:42+00:00

I have JTable of order 7X145 which are cell editable through check boxes. I

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I have JTable of order 7X145 which are cell editable through check boxes.

I would like to setEditable(false) only for coloumn(0) since it only contains the name of the respective rows.

How can I achieve this without disturbing the other column’s editable property because whenever i click column(0), it throws an error stating…

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
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  1. Editorial Team
    Editorial Team
    2026-05-22T16:13:43+00:00Added an answer on May 22, 2026 at 4:13 pm

    Your problem is that you have a table model that is implementing getColumnClass() in such a way that is says the first column is a Boolean instead of String. Fix that and you will no longer have that error and will be able to also edit the name.

    If you truly don’t want any editing on the first column, override the isCellEditable() to return false for that column.

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