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 javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;

public class Main implements ActionListener {
    JFrame myFrame = new JFrame();

    public static void main(String[] a) {
        (new Main()).test();
    }

    private void test() {
        myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        myFrame.setBounds(50, 50, 250, 150);
        myFrame.setContentPane(new JDesktopPane());
        JMenuBar myMenuBar = new JMenuBar();
        JMenu myMenu = getDialogMenu();
        myMenuBar.add(myMenu);
        myFrame.setJMenuBar(myMenuBar);
        myFrame.setVisible(true);
    }

    private JMenu getDialogMenu() {
        JMenu myMenu = new JMenu("Dialogs");
        JMenuItem myItem = new JMenuItem("Information");
        myItem.addActionListener(this);
        myMenu.add(myItem);
        myItem = new JMenuItem("Warning");
        myItem.addActionListener(this);
        myMenu.add(myItem);
        myItem = new JMenuItem("Error");
        myItem.addActionListener(this);
        myMenu.add(myItem);
        myItem = new JMenuItem("Plain");
        myItem.addActionListener(this);
        myMenu.add(myItem);
        return myMenu;
    }

    public void actionPerformed(ActionEvent e) {
        String menuText = ((JMenuItem) e.getSource()).getText();
        int messageType = JOptionPane.INFORMATION_MESSAGE;
        if (menuText.equals("Information")) {
            messageType = JOptionPane.INFORMATION_MESSAGE;
        } else if (menuText.equals("Warning")) {
            messageType = JOptionPane.WARNING_MESSAGE;
        } else if (menuText.equals("Error")) {
            messageType = JOptionPane.ERROR_MESSAGE;
        } else if (menuText.equals("Plain")) {
            messageType = JOptionPane.PLAIN_MESSAGE;
        }

        JOptionPane.showMessageDialog(myFrame, "This is message dialog box of type: " + menuText,
                menuText + " Message", messageType);
    }
}