Remove all items from JComboBox in Java

/*w w w.j a  v a  2s .  c  o m*/
import java.awt.BorderLayout;

import javax.swing.JComboBox;
import javax.swing.JFrame;

public class Main {

  public static void main(String args[]) {
    String labels[] = { "A", "B", "C", "D", "E", "F" };
    JFrame frame = new JFrame("Selecting JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JComboBox comboBox = new JComboBox(labels);
    frame.add(comboBox, BorderLayout.SOUTH);

    comboBox.removeAllItems();

    frame.setSize(400, 200);
    frame.setVisible(true);
  }
}