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Last edited by helloworld922; May 22nd, 2011 at 08:14 PM.
You need to notify the model the the table structure has changed. Presuming the TableModel of your JTable extends AbstractTableModel, call fireTableStructureChanged() on the model
thanks, copeg! your solution worked but it recreated all table from model which contained old data so I had to change approach. now I use model.setColumnIdentifiers(columnNames) each time I need to change columnNames and it works. thanks again.