ShowAction.java Source code

Introduction

Here is the source code for ShowAction.java

Source

import java.awt.Component;
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;
import javax.swing.JOptionPane;

class ShowAction extends AbstractAction {
    Component parentComponent;

    public ShowAction(Component parentComponent) {
        super("About");
        putValue(Action.MNEMONIC_KEY, new Integer(KeyEvent.VK_A));
        this.parentComponent = parentComponent;
    }

    public void actionPerformed(ActionEvent actionEvent) {
        JOptionPane.showMessageDialog(parentComponent, "About Swing", "About Box V2.0",
                JOptionPane.INFORMATION_MESSAGE);
    }
}

public class ContructMenuWithAction {
    public static void main(final String args[]) {
        JFrame frame = new JFrame("MenuSample Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JButton bn = new JButton(new ShowAction(frame));

        frame.add(bn);

        frame.setSize(350, 250);
        frame.setVisible(true);
    }
}