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.KeyEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFrame;

public class Main {
    public static void main(String[] a) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        Action action = new ShowAction();
        JButton button = new JButton(action);

        frame.add(button, BorderLayout.CENTER);
        frame.setSize(350, 150);
        frame.setVisible(true);
    }
}

class ShowAction extends AbstractAction {
    public ShowAction() {
        super("About");
        putValue(Action.MNEMONIC_KEY, new Integer(KeyEvent.VK_A));

        putValue(Action.NAME, "Go to number ");
        putValue(Action.SHORT_DESCRIPTION, "Change the number to ");
        super.setEnabled(false);
        System.out.println(super.isEnabled());
    }

    public void actionPerformed(ActionEvent actionEvent) {
        System.out.println("About Swing");
    }
}