Java Swing | JPopupMenu - GeeksforGeeks

JPopupMenu is a class of javax.swing package . It is an implementation of PopupMenu . JPopupMenu generates a small window that pops up and displays a series of choices. JPopupMenu can be used to generate a small window at any position within the container.
Constructor of the class are :

JPopupMenu() : creates a popup menu with empty name
JPopupMenu(String name) : creates a popup menu with specified title.

Commonly used methods of JPopupMenu are :

add(JMenuItem menuItem) : add menuItem to the popup menu.
add(String s) : add String to the popup menu .
String getLabel() : get the popup menu’s label.
boolean is Visible() : returns whether the JPopup menu is visible or not.
setLabel(String s) : sets the popup menu’s label.
setLocation(int x, int y) : sets the pop up menu;s location to the given coordinates
setPopupSize(int width, int height) : set the popup size to give height and width
setVisible(boolean b) : sets the visibility of the pop up menu, visible if true is passed as argument or vice versa.
show(Component c, int x, int y) : displays the popup menu at x, y position within the component c.

1. Program to show a simple popup menu

// Java program to show a simple popup menu 
import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; 
class Popup extends JFrame implements ActionListener { 
  
    // java button 
    static JButton b; 
  
    // java frame 
    static JFrame f; 
  
    // popup menu 
    static JPopupMenu pm; 
  
    // default constructor 
    Popup() 
    { 
    } 
  
    // main class 
    public static void main(String[] args) 
    { 
        // create a frame 
        f = new JFrame("Popup"); 
  
        // set the size of the frame 
        f.setSize(400, 400); 
  
        // close the frame when close button is pressed 
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
  
        // create anew panel 
        JPanel p = new JPanel(); 
  
        // create an object of mouse class 
        Popup pop = new Popup(); 
  
        // create a button 
        b = new JButton("click"); 
  
        // addActionListener 
        b.addActionListener(pop); 
        p.add(b); 
        f.add(p); 
        f.show(); 
    } 
  
    // when the button is clicked 
    public void actionPerformed(ActionEvent e) 
    { 
        String s = e.getActionCommand(); 
        if (s.equals("click")) { 
            // create a popup menu 
            pm = new JPopupMenu("Message"); 
  
            // create a label 
            JLabel l = new JLabel("this is the popup menu"); 
  
            // add the label to the popup 
            pm.add(l); 
  
            // add the popup to the frame 
            pm.show(f, 100, 100); 
        } 
    } 
} 

Output :

2.Program to show a popup menu and menu items to it

// Java program to show a popup menu 
// and menu items to it 
import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; 
class Popup extends JFrame implements ActionListener { 
  
    // java button 
    static JButton b; 
  
    // java frame 
    static JFrame f; 
  
    // popup menu 
    static JPopupMenu pm; 
  
    // JLabel 
    JLabel l; 
  
    // default constructor 
    Popup() 
    { 
    } 
  
    // main class 
    public static void main(String[] args) 
    { 
        // create a frame 
        f = new JFrame("Popup"); 
  
        // set the size of the frame 
        f.setSize(400, 400); 
  
        // close the frame when close button is pressed 
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
  
        // create anew panel 
        JPanel p = new JPanel(); 
  
        // create an object of mouse class 
        Popup pop = new Popup(); 
  
        // create a button 
        b = new JButton("click"); 
  
        // addActionListener 
        b.addActionListener(pop); 
  
        // create a popup menu 
        pm = new JPopupMenu("Message"); 
  
        // create menuItems 
        JMenuItem m1 = new JMenuItem("Item1"); 
        JMenuItem m2 = new JMenuItem("Item2"); 
        JMenuItem m3 = new JMenuItem("Item3"); 
  
        // create a Jlabel 
        JLabel l = new JLabel("nothing clicked"); 
  
        // add menuitems to popup menu 
        pm.add(m1); 
        pm.add(m2); 
        pm.add(m3); 
  
        // addActionListener 
        m1.addActionListener(new ActionListener() { 
            public void actionPerformed(ActionEvent e) 
            { 
                l.setText("Item 1 clicked."); 
            } 
        }); 
  
        m2.addActionListener(new ActionListener() { 
            public void actionPerformed(ActionEvent e) 
            { 
                l.setText("Item 2 clicked."); 
            } 
        }); 
  
        m3.addActionListener(new ActionListener() { 
            public void actionPerformed(ActionEvent e) 
            { 
                l.setText("Item 3 clicked."); 
            } 
        }); 
  
        // add button and label to frame 
        p.add(b); 
        p.add(l); 
  
        f.add(p); 
        f.show(); 
    } 
  
    // when the button is clicked 
    public void actionPerformed(ActionEvent e) 
    { 
        String s = e.getActionCommand(); 
        if (s.equals("click")) { 
  
            // add the popup to the frame 
            pm.show(f, 200, 200); 
        } 
    } 
} 

Output :

Note : This codes might not run in a online IDE please use an offline compiler

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