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the icon of jcheckBox dosnt appear in jTableCell

 
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im using
it works but the icon of the checkbox dosent appear till you click on the cell
 
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That's because you need a TableCellRenderer for displaying cells when they are not edited.

However, you can make your JTable use a check box for both rendering and editing a lot easier: make your TableModel return Boolean.class in its getColumnClass method for that column. JTable uses that return value to determine a global renderer / editor for cells, and for Boolean that is a check box.
 
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