populating a JTable with two columns while having the database id accessible

Hi, new to using JTable, and since in a rush to finish this piece in the next hour, hence the 500points. I have a JTable and I want to populate it with two clumns First Name, Last Name. Data is coming from the database . I want to be able to click on one row and get the database ID of the row so I can use it elsewhere.  If I was using a JList, I would create a vector of PairElement class [below] and assign it to the list, but since I need to display two columns, I will use JTable. Any working suggestion plz? To be simple, here is the data to be displayed

columnNames = { "first Name ", "Last Name"};

rows:
FirstName1, LastName1  //database id 100
FirstName2, LastName2 //database id 101

When I click on the first raw, I wanna be able to get the id 100.  So what is the common approach to do this in JTable?
 
public class PairElement
{
    protected String m_name;
    protected String m_id;

    public PairElement(String name, String id)
    {
     m_name = name;
     m_id = id;
    }

    public void   setName(String name) {
      m_name = name;
    }
   
    public String getName() {
      return m_name;
    }
   
    public void   setID(String id) {
      m_id = id;
    }
   
    public String getID() {
      return m_id;
    }
   
    public String toString() {
      return m_name;
    }
}