Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.KeyStroke;

public class Main extends JFrame {
    static String exitName = "Exit";

    ExitAction exitAction = new ExitAction(exitName);

    public Main() {
        int MASK = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();

        KeyStroke exitKey = KeyStroke.getKeyStroke(KeyEvent.VK_W, MASK);
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);

        JMenu fileMenu = new JMenu("File");
        JMenuItem fileExit = new JMenuItem(exitAction);
        fileMenu.add(fileExit);
        JMenuBar menu = new JMenuBar();
        menu.add(fileMenu);

        JDialog d = new JDialog(this, "Dialog");
        JPanel p = new JPanel();
        p.getInputMap().put(exitKey, exitName);
        p.getActionMap().put(exitName, exitAction);
        p.add(new JButton(exitAction));
        d.add(p);
        d.pack();
        d.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);

        this.setJMenuBar(menu);
        this.pack();
        this.setSize(new Dimension(320, 240));
        this.setVisible(true);
        d.setLocation(this.getRootPane().getContentPane().getLocationOnScreen());
        d.setVisible(true);
    }

    public static void main(String[] args) {
        new Main();
    }
}

class ExitAction extends AbstractAction {
    int MASK = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();

    KeyStroke exitKey = KeyStroke.getKeyStroke(KeyEvent.VK_W, MASK);

    public ExitAction(String name) {
        super(name);
        this.putValue(Action.MNEMONIC_KEY, exitKey.getKeyCode());
        this.putValue(Action.ACCELERATOR_KEY, exitKey);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        System.exit(0);
    }
}