How to make only one checkbox selectable in JTable Column

Question

I am using DefaultTableModel as follows:

  DefaultTableModel model = new DefaultTableModel (COLUMNS, 0 )
  {
      @Override
      public boolean isCellEdita         


        

Answer 1

• @eatSleepCode wrote @mKorbel can you please give example code for implementing setValueAt method.

• code for (OP used) DefaultTableModel,

• for code based on AbstractTableModel is required to hold code ordering for notifier fireTableCellUpdated(rowIndex, columnIndex);, because/otherwise nothing will be repainted in JTables view,

• there are a few important differencies betweens those two models and its notifiers, and (my view) there isn't reason to bothering with and to use AbstractTableModel for basic stuff (99pct of table models)

. . . . . . . .

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;

public class TableRolloverDemo {

    private JFrame frame = new JFrame("TableRolloverDemo");
    private JTable table = new JTable();
    private String[] columnNames = new String[]{"Column"};
    private Object[][] data = new Object[][]{{false}, {false}, {true}, {true},
        {false}, {false}, {true}, {true}, {false}, {false}, {true}, {true}};

    public TableRolloverDemo() {
        final DefaultTableModel model = new DefaultTableModel(data, columnNames) {
            private boolean ImInLoop = false;

            @Override
            public Class getColumnClass(int columnIndex) {
                return Boolean.class;
            }

            @Override
            public boolean isCellEditable(int rowIndex, int columnIndex) {
                return true;
            }

            @Override
            public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
                if (columnIndex == 0) {
                    if (!ImInLoop) {
                        ImInLoop = true;
                        Boolean bol = (Boolean) aValue;
                        super.setValueAt(aValue, rowIndex, columnIndex);
                        for (int i = 0; i < this.getRowCount(); i++) {
                            if (i != rowIndex) {
                                super.setValueAt(!bol, i, columnIndex);
                            }
                        }
                        ImInLoop = false;
                    }
                } else {
                    super.setValueAt(aValue, rowIndex, columnIndex);
                }
            }
        };
        table.setModel(model);
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new JScrollPane(table));
        frame.pack();
        frame.setLocationByPlatform(true);
        frame.setVisible(true);
    }


    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                TableRolloverDemo tableRolloverDemo = new TableRolloverDemo();
            }
        });
    }
}