Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

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

public class Main extends JPanel {
    public Main() {
        String[] comboTypes = { "Numbers", "Alphabets", "Symbols" };
        JComboBox<String> comboTypesList = new JComboBox<>(comboTypes);
        comboTypesList.setSelectedIndex(2);
        comboTypesList.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JComboBox jcmbType = (JComboBox) e.getSource();
                String cmbType = (String) jcmbType.getSelectedItem();
                System.out.println(cmbType);
            }
        });
        setLayout(new BorderLayout());
        add(comboTypesList, BorderLayout.NORTH);
    }

    public static void main(String s[]) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(new Main());
        frame.pack();
        frame.setVisible(true);
    }
}