How Do I Add/Show Checkbox Column In Table From Database

See more:

Java

i have a combobox that connect to database table so when i choose one of database table, it will show in a table, but there's no checkbox there. so i want to put add checkbox column when i choose one of database table in combobox.

this is my code in combobox:

final String[] TABLE_NAMES = { "mtb", "bmx", "lipat", "anak" };
       javax.swing.table.TableModel model = null;
       model = new MtbDb(TABLE_NAMES[jComboBox1.getSelectedIndex() -1]);
       jTable1.setModel(model);

and this is my code in mtbdb class:

public class MtbDb extends javax.swing.table.AbstractTableModel {
    private final String[] HEADERS = { "ID", "Nama Sepeda", "Merek", "Harga", "Model" };
    private ArrayList<DATA> data = new ArrayList<>();
    
    public MtbDb(String tableName) {
        try {
            Connection c = DriverManager.getConnection("jdbc:mysql://localhost/sepedadb", "root", "");
            Statement stat = c.createStatement();
            ResultSet result = stat.executeQuery("select * from " + tableName);
            while(result.next()) {
                data.add(new DATA(result.getString(1), result.getString(2), result.getString(3), result.getString(4), result.getString(5)));
            }
        } catch(SQLException e) { e.printStackTrace(); }
    }
    
    @Override
    public int getRowCount() {
        return data.size();
    }

    @Override
    public int getColumnCount() {
        return 5;
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        DATA d = data.get(rowIndex);
        switch(columnIndex) {
            case 0: return d.getID();
            case 1: return d.getnama_sepeda();
            case 2: return d.getmerek();
            case 3: return d.getharga();
            case 4: return d.getmodel();
            default: return null;
        }    
    }
    
    public String getColumnName(int column) {
        return HEADERS[column];
    }
}