Menu Demo 4 : Menu « Swing JFC « Java

Menu Demo 4

Menu Demo 4
Definitive Guide to Swing for Java 2, Second Edition
By John Zukowski     
ISBN: 1-893115-78-X
Publisher: APress

import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

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

public class MediumPopupMenuSample {

  public static void main(String args[]) {
    // Define ActionListener
    ActionListener aListener = new ActionListener() {
      public void actionPerformed(ActionEvent event) {
        System.out.println("Selected: " + event.getActionCommand());

    // Define PopupMenuListener
    PopupMenuListener pListener = new PopupMenuListener() {
      public void popupMenuCanceled(PopupMenuEvent event) {

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

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

    // Define
    JFrame frame = new JFrame("Popup Example");


    // Create popup menu, attach popup menu listener
    final JPopupMenu popupMenu = new JPopupMenu();

    // Cut
    JMenuItem cutItem = new JMenuItem("Cut");

    // Copy
    JMenuItem copyItem = new JMenuItem("Copy");

    // Paste
    JMenuItem pasteItem = new JMenuItem("Paste");

    // Separator

    // Find
    JMenuItem findItem = new JMenuItem("Find");

    // Enable showing
    MouseListener mouseListener = new JPopupMenuShower(popupMenu);

    Button button = new Button("Label");
    button.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
    frame.getContentPane().add(button, BorderLayout.SOUTH);

    frame.setSize(350, 250);

class JPopupMenuShower extends MouseAdapter {

  private JPopupMenu popup;

  public JPopupMenuShower(JPopupMenu popup) {
    this.popup = popup;

  private void showIfPopupTrigger(MouseEvent mouseEvent) {
    if (popup.isPopupTrigger(mouseEvent)) {, mouseEvent.getX(), mouseEvent

  public void mousePressed(MouseEvent mouseEvent) {

  public void mouseReleased(MouseEvent mouseEvent) {


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