public class PersonTableModel extends AbstractTableModel {

    private static final long serialVersionUID = 1L;

    public static final int OBJECT_COL = -1;
    private static final int PERSON_ID = 0;
    private static final int LAST_NAME_COL = 1;
    private static final int FIRST_NAME_COL = 2;
    private static final int FK_COUNTY_ID = 3;

    private String[] columnNames = { "Person_ID", "Last_Name", "First_Name",
            "County_ID" };

    private List<Person> persons;

    public PersonTableModel(List<Person> thePersons) {
        persons = thePersons;
    }

    @Override
    public int getColumnCount() {
        return columnNames.length;
    }

    @Override
    public int getRowCount() {
        return persons.size();
    }

    @Override
    public String getColumnName(int col) {
        return columnNames[col];
    }

    @Override
    public Object getValueAt(int row, int col) {

        Person tempPerson = persons.get(row);

        switch (col) {
        case LAST_NAME_COL:
            return tempPerson.getLastName();
        case FIRST_NAME_COL:
            return tempPerson.getFirstName();
        case PERSON_ID:
            return tempPerson.getId();
        case FK_COUNTY_ID:
            return tempPerson.getCountyId();
        case OBJECT_COL:
            return tempPerson;
        default:
            return tempPerson.getLastName();
        }
    }

    @SuppressWarnings({ "unchecked", "rawtypes" })
    public Class getColumnClass(int c) {
        return getValueAt(0, c).getClass();
    }

}