Action Listener To JComboBox In Java

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import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class JavaJComboBoxActionListner extends JFrame {

	public JavaJComboBoxActionListner() {
		initialize();
	}

	private void initialize() {
		setSize(300, 300);
		setLayout(new FlowLayout(FlowLayout.LEFT));
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		String[] names = new String[] { "Java", "C++", "C" };
		JComboBox comboBox = new JComboBox(names);
		comboBox.setEditable(true);

		comboBox.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent event) {

				JComboBox comboBox = (JComboBox) event.getSource();

				System.out.println("Selected Item  = " + comboBox.getSelectedItem());
				System.out.println("Action Command = " + event.getActionCommand());

				if ("comboBoxEdited".equals(event.getActionCommand())) {
					System.out.println("User has typed a string in the combo box.");
				} else if ("comboBoxChanged".equals(event.getActionCommand())) {
					System.out.println("User has selected an item from the combo box.");
				}
			}
		});

		getContentPane().add(comboBox);
	}

	public static void main(String[] args) {
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				new JavaJComboBoxActionListner().setVisible(true);
			}
		});
	}
}

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