Which event to use when selecting a row in a Table

[Salo]

Which event should be appropriate when selecting a row in a Table. More precisely I want to display the info about the row in textfields when clicking on a row. Anyone got a clue?

 

[Vepo]

Hi Salo,

This is one way you could do it:

import java.awt.*;
import java.awt.event.*;

public class ListTest extends Frame implements ItemListener
{
public ListTest()
{
List list = new list();
list.addItemListener(this); // class implements ItemListener

// ... do some GUI stuff.....
}

// This method handles the itemevents when you select item from list
public void itemStateChanged(ItemEvent e)
{
ItemSelectable is = e.getItemSelectable();
String rowValue = is.getSelectedObjects()[0].toString();
// rowValue contains the value of the selected row
}

}

Check the documentation related to java.awt.List, java.awt.ItemSelectable and java.awt.event.ItemEvent
from

http://java.sun.com/j2se/1.3/docs/api/index.html

I hope that helped you.

-Vepo

 

[LeonTang]

Hi Salo,

I think you will have to be more precise in what Table you are talking about? If you are talking about JTable, there is an example that comes along with the jdk package. It can be found in the folder c:\jdk1.3\demo\jfc\TableExample\ .

If I don't remember wrongly, the program allows you to click (or double click) on a particular row of data retrieved from the database and displays information on that row for you to edit.

Regards,
Leon If you need additional help, you can email to me at zaoliang@hotmail.com I don't guaranty that I will be able to solve your problems but I will try my best

 

[Vepo]

Sorry, I think I misunderstood your problem

 

[Salo]

Hi!

I didn't find any help in the examples that comes with the JDK.

I wondered if it's possible to do it like this:

public class Table extends JTable implements ItemSelectable
{
...
}

//Salo

 

[LeonTang]

Hi Salo,

Sorry for the late reply. I am not so sure whether implementing ItemSelectable will work or not (because I always can't seem to get ItemSelectable to work for other cases, not JTable). However, I know implementing MouseListener will work.

Regards,
Leon If you need additional help, you can email to me at zaoliang@hotmail.com I don't guaranty that I will be able to solve your problems but I will try my best

 

[Salo]

I solved the problem!

In the frame-class I did like this:

public class Main_Frame extends JFrame implements ListSelectionListener
{
  JTable table;
...
  ListSelectionModel lsm = table.getSelectionModel();
...
  //Somewhere in the main code/constructor
  table.setSelectionModel(lsm);
...
  //Method from the interface
  public valueChanged (ListSelectionEvent e)
  {
    if (e.getSource() == table.getSelectionModel())
    ...
  }
...
}

Thanks for your efforts to help me!

Regards,
Salo