import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JComboBox;
import javax.swing.JFrame;
public class Main extends JFrame {
JComboBox combo = new JComboBox();
public Main() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
combo.addItem("A");
combo.addItem("H");
combo.addItem("P");
combo.setEditable(true);
System.out.println("#items=" + combo.getItemCount());
combo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println("Selected index=" + combo.getSelectedIndex()
+ " Selected item=" + combo.getSelectedItem());
}
});
getContentPane().add(combo);
pack();
setVisible(true);
}
public static void main(String arg[]) {
new Main();
}
}