Silenty change combobox contents without generating an event

Question

How do I do the following code without generating an item selected event?
        employeeModel.removeAllElements();
        for (Employee employee : employeeList) {
            employeeModel.addElement(employee); // FIXME generates event at index 0
        }

Answer 1

you change the combo's model
here's a simple demo - click the button to change the model
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class Testing extends JFrame
  String[] numbers = {"1","2","3"};
  String[] letters = {"a","b","c"};
  JComboBox cbo = new JComboBox(numbers);
  public Testing()
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setSize(400,100);
    setLocation(400,300);
    JButton btn = new JButton("OK");
    JPanel panel =new JPanel();
    panel.add(cbo);
    panel.add(btn);
    getContentPane().add(panel);
    pack();
    cbo.addItemListener(new ItemListener(){
      public void itemStateChanged(ItemEvent ie){
        if(ie.getStateChange() == ItemEvent.SELECTED){
          System.out.println(cbo.getSelectedIndex());}}});
    btn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        //cbo.removeAllItems(); //these two lines generate item event
        //for(int x = 0; x < letters.length; x++) cbo.addItem(letters[x]);
        cbo.setModel(new DefaultComboBoxModel(letters));}});//this doesn't
  public static void main(String[] args){new Testing().setVisible(true);}
}