用到DefaultTabelModel類

public class JTableTest {
	
	
	public static void main(String[] args) throws DAOException {
		
		DefaultTableModel model = new DefaultTableModel(0,3);
		JTable table = new JTable(model);
		JFrame jf = new JFrame();
		
		ICostDAO dao = DAOFactory.getCostDAO();
		
		model.setRowCount(0);
		try {
			List<Cost> costs = dao.findAll();
			for(int i=0;i<costs.size();i++){
				Cost c = (Cost)costs.get(i);
				Object[] obj = {c.getId(), c.getCostType(), c.getName()};
				model.insertRow(table.getSelectedRowCount(), obj);
			}
						
			jf.add(table);			
			jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
			jf.setSize(500, 300);			
			jf.setLocationRelativeTo(null);
			jf.setVisible(true);
		} catch (DAOException e) {
			e.printStackTrace();
			throw new DAOException("查詢資料失敗",e);
		} finally{
			DBUtil.close();
		}
	}
}