How to insert new Item in JCombox through setEditable?

Question

Hey guys,
Is there somebody who can help me on how to insert new Item in the JComboBox through setEditable?
JComboBox box  = new JComboBox();
box.addItem("");box.addItem("a");
box.addItem("b");
box.setEditable(true);
When I run it and selected the index 0 which the one which color red, I want to edit it and when I press enter key it will add a new item, but preserving this " box.addItem(""); , what I want is to add like this one, box.addItem("The new text entered"); "
Can you help me with this one... Thanks

Answer 1

hello,
the following demo may help,
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
* comobo.java
* Version 1.0
* Date Jan 3, 2006
* Copyright spatika
public class comobo extends JFrame implements ActionListener{
     JComboBox jc = new JComboBox();
     DefaultComboBoxModel lm = new DefaultComboBoxModel();
     JButton jb = new JButton("add");
     public comobo(){
          lm.addElement("");
          lm.addElement("1");
          lm.addElement("2");
          lm.addElement("3");
          jc.setModel(lm);
          jc.setEditable(true);
          jb.addActionListener(this);
          getContentPane().add(jb,BorderLayout.NORTH);
          getContentPane().add(jc,BorderLayout.SOUTH);
          pack();
          setVisible(true);
          setDefaultCloseOperation(EXIT_ON_CLOSE);
     public void actionPerformed(ActionEvent i){
          Object text = jc.getSelectedItem();
          jc.setSelectedItem(null);
          lm.addElement(text);
     public static void main(String artgs[]){
          new comobo();
}thanks
daya