Main.java Source code

Introduction

Here is the source code for Main.java

Source

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();
    }
}