How to create a right-click context menu in Java Swing

JPopupMenu is a class of javax.swing package. It is an implementation of a popup menu. JPopupMenu generates a small window that appears and displays a series of choices. JPopupMenu can be used to generate a small window at any position in a container.

 

Constructors of JPopupMenu class:

• JPopupMenu(): creates a contextual menu with an empty name
• JPopupMenu(String name): creates a popup menu with the specified title.

 

Commonly used methods:

• add(JMenuItem menuItem): add menuItem to the context menu.
• add(String s): add a string to the contextual menu.
• getLabel(): get the label of the context menu.
• isVisible(): return whether the JPopup menu is visible or not.
• setLabel(String s): sets the label of the context menu.
• setLocation(int x, int y): sets the location of the context menu to the given coordinates
• setPopupSize(int width, int height): set the size of the popup.
• setVisible(boolean b): set the visibility of the contextual menu, visible if true is passed as argument or vice versa.
• show(Component c, int x, int y): displays the context menu at position x, y in the component c.

 

Java Program to create a right-click context menu:

import javax.swing.*;
import java.awt.event.*;

class MyJPopupMenu
{
 MyJPopupMenu()
 {
   final JFrame frame = new JFrame("PopupMenu example");
   final JPopupMenu menu = new JPopupMenu("Menu"); 
     
   JMenuItem open = new JMenuItem("Open");
   JMenuItem cut = new JMenuItem("Cut");
   JMenuItem copy = new JMenuItem("Copy");
   JMenuItem paste = new JMenuItem("Paste");
     
   menu.add(open); 
   menu.add(cut); 
   menu.add(copy);
   menu.add(paste);
     
   frame.addMouseListener(new MouseAdapter() {
    public void mouseClicked(MouseEvent e) {
     //right mouse click event
     if (SwingUtilities.isRightMouseButton(e) && e.getClickCount() == 1){
           menu.show(frame , e.getX(), e.getY());
     }        
    }               
   });

   frame.add(menu); 
   frame.setSize(300,300);
   frame.setLayout(null);
   frame.setVisible(true);
 }
 public static void main(String args[])
 {
     new MyJPopupMenu();
 }
}

Output:

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