MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

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

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;

public class MainClass {

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

        ActionListener actionListener = new PopupActionListener();
        PopupMenuListener popupMenuListener = new MyPopupMenuListener();

        JPopupMenu popupMenu = new JPopupMenu("Title");
        popupMenu.addPopupMenuListener(popupMenuListener);

        JMenuItem cutMenuItem = new JMenuItem("Cut");
        cutMenuItem.addActionListener(actionListener);
        popupMenu.add(cutMenuItem);

        JMenuItem copyMenuItem = new JMenuItem("Copy");
        copyMenuItem.addActionListener(actionListener);
        popupMenu.add(copyMenuItem);

        JMenuItem pasteMenuItem = new JMenuItem("Paste");
        pasteMenuItem.addActionListener(actionListener);
        pasteMenuItem.setEnabled(false);
        popupMenu.add(pasteMenuItem);

        popupMenu.addSeparator();

        JMenuItem findMenuItem = new JMenuItem("Find");
        findMenuItem.addActionListener(actionListener);
        popupMenu.add(findMenuItem);
        JButton label = new JButton();
        frame.add(label);
        label.setComponentPopupMenu(popupMenu);

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

class PopupActionListener implements ActionListener {
    public void actionPerformed(ActionEvent actionEvent) {
        System.out.println("Selected: " + actionEvent.getActionCommand());
    }
}

class MyPopupMenuListener implements PopupMenuListener {
    public void popupMenuCanceled(PopupMenuEvent popupMenuEvent) {
        System.out.println("Canceled");
    }

    public void popupMenuWillBecomeInvisible(PopupMenuEvent popupMenuEvent) {
        System.out.println("Becoming Invisible");
    }

    public void popupMenuWillBecomeVisible(PopupMenuEvent popupMenuEvent) {
        System.out.println("Becoming Visible");
    }
}