Hi Freddy
If I understand well, the point 3 resumes can be written just like this:
private void capturarCampoSeleccionado()
{
int theIndexNumber =
jComboBox1.getSelectedItem()*.getIndice()*;
javax.swing.JOptionPane.showMessageDialog(null, "Datos
seleccionado: " +
String.valueOf(theIndexNumber));
}
Hope it helps
Mihai
Le 17/11/2010 03:52, Freddy Castelblanco Macias a écrit :
Hi guys
Continuing with this forum, I fix what i Want like this:
1. I created my clase called clsComboItem with two properties:
valueMember and displayMember
2. With the Data of the result set and using a Collection, I load my
combo, my object of the class clsComboItem and my Collection like this:
Previously at the global level of the GUI, i declared a Collection
of type clsComboItem, in this case is a vector:
Vector<clsComboItem> Coleccion = new Vector<clsComboItem>();
while (objConexion.ResultSetSQL.next())
{
objC = new clsComboItem();
objC.setIntIndice(objConexion.ResultSetSQL.getInt("Codigo"));
objC.setStrValorMostrar(objConexion.ResultSetSQL.getString("Nombre"));
Coleccion.add(objC);
jComboBox1.addItem(objC.getStrValorMostrar());
}
when i want get the code of any data for example that in the DB is
like this:
1 Sandra
2 Freddy
3 Ibo
.
.
.
.
Etc,
3. i made like this:
private void capturarCampoSeleccionado()
{
String strClave;
int theIndexNumber = 0;
strClave = String.valueOf(jComboBox1.getSelectedItem());
for (int i = 0 ; i < Coleccion.size(); i++)
{
if(Coleccion.get(i).getStrValorMostrar().equals(strClave))
{
theIndexNumber = Coleccion.get(i).getIntIndice();
break;
}
}
javax.swing.JOptionPane.showMessageDialog(null, "Datos
seleccionado: " + String.valueOf(theIndexNumber));
}
So this was my solution.
I come from .Net, and this is the most similar way for capture data
from the database like i want,
Any suggestion?? any way for do this more efficient??
2010/11/7 Mihai DINCA <mihai.di...@free.fr <mailto:mihai.di...@free.fr>>
Hi Freddy
A JComboBox manages objects not only Strings. It displays the
value returned by the "toString()" method in each of the objects,
but inside you can do whatever you want.
For e.g., define your own "ComboItem" class. For e.g.:
public class ComboItem {
private int index;
private String value;
public ComboItem( int i, String v ){
index = i; value = v;
}
@Override
public String toString(){
return "" + index + " " + value;
}
public int getIndex(){ return index; }
}
When you read the database, create a ComboItem for each record in
the database then add the ComboItem to your JComboBox. For e.g.:
....
JComboBox jcb = ...;
....
ResultSet rs = ...;
while ( rs.next()){
ComboItem ci = new ComboItem( rs.getInteger("INDEXNO"),
rs.getString("LABEL");
jcb.addItem( ci );
}
....
If you do this way, the JComboBox will display what "toString()"
returns for each of the items. I.e. index, space, value.
When the user ends entering the data (including choosing a line in
the JComboBox), you can get the object chosen by the user and the
index number:
....
ComboItem ci = (ComboItem)(jcb.getSelectedItem());
int theIndexNumber = ci.getIndex();
....
Now, this is only one possible way to do it. Another way is to put
all the ComboItem objects into a collection when they are read
from the database, then fill the JComboBox based on the elements
of the collection (meaning separation between the database access
level and the user interface). And so on.
Hope it helps
Mihai
Le 07/11/2010 04:28, Shiv Shankar Prajapati a écrit :
Hi,
Go through following link, it might help you
http://www.javabeginner.com/java-swing/java-jcombobox-class-example
Here JComboBox takes string array which we can build at run
time in different ways. So fetch all the records and convert it
in to String array and then pass it to the JComboBox.
On Sat, Nov 6, 2010 at 8:58 AM, Freddy Castelblanco Macias
<thelords...@gmail.com <mailto:thelords...@gmail.com>> wrote:
Hi people !!!
Im working in Java with SQLJDBC and plain Files (secuencial,
Indexed ... etc). But ... I have to make a GUI and in one
control of
Swing (JComboBox) I want to try to fill this control with
information
that i have in my database or with information of my plain
file. But i
want in one way:.... For example:
//this is de actionPerformed of the jCombobox
//so when im evaluating the content on this control i want
capture the
value and display in the GUI the information //of this VALUE..
1 Coke
2 Bread
3 Lents
The number is the value witch i want work and the words must be
displayed in the GUI
SO how can i do that???
Help please !!!!
Some told me one day, that this I can do whith a Collection, but
How ??
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With Regards,
Shiv Shankar,
Persistent System Ltd.
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Cordiamente,
Freddy Castelblanco Macías
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