How to Uncheck All Selected Checkboxes in a JTable Upon Single Checkbox Uncheck?

Multiple Row Selection with Checkbox Unchecking in JTable

In a JTable with a non-editable text column and a checkbox column displaying boolean values, you may encounter a scenario where you wish to uncheck all checkboxes under selection when one checkbox is unchecked. Here's how to achieve this:

The provided example demonstrates a graphical user interface that employs buttons for simplicity. However, a SelectionAction can be effectively implemented for menus or popups.

Consider the following steps:

Data Structure

• Define a custom DataModel that extends DefaultTableModel.
• Override the getColumnClass method to specify that the checkbox column is of Boolean class.
• Override the isCellEditable method to make the checkbox column editable.

Selection Handling

• Utilize DefaultListSelectionModel to manage row selections.

Action for Checkbox Manipulation

• Define a SelectionAction class that extends AbstractAction to handle button events.
• Pass a boolean value to the constructor to indicate the desired checkbox state.
• When the action is triggered, iterate through the selected rows, setting the checkbox value to the specified boolean for each selected row.

Integration

• Add the control panel with buttons to the main JPanel.
• Listen for button clicks and execute the SelectionAction to manage checkbox updates.

Example Code

//...
private class ControlPanel extends JPanel {
    public ControlPanel() {
        this.add(new JLabel("Selection:"));
        this.add(new JButton(new SelectionAction("Clear", false)));
        this.add(new JButton(new SelectionAction("Check", true)));
    }
}
//...

This approach provides a comprehensive solution for handling multiple row selection and checkbox unchecking within a JTable.

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