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How can we implement right click menu using JPopupMenu in Java?
A JPopupMenu appears anywhere on the screen when a right mouse button is clicked.
JPopupMenu
- A popup menu is a free-floating menu which associates with an underlying component called the invoker.
- Most of the time, a popup menu is linked to a specific component to display context-sensitive choices.
- In order to create a popup menu, we can use the JPopupMenu class., we can add the JMenuItem to popup menu like a normal menu.
- To display the popup menu, we can call the show() method, normally popup menu is called in response to a mouse event.
Example
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
public class JPopupMenuTest extends JFrame {
private JPopupMenu popup;
public JPopupMenuTest() {
setTitle("JPopupMenu Test");
Container contentPane = getContentPane() ;
popup = new JPopupMenu();
// add menu items to popup
popup.add(new JMenuItem("Cut"));
popup.add(new JMenuItem("Copy"));
popup.add(new JMenuItem("Paste"));
popup.addSeparator();
popup.add(new JMenuItem("SelectAll"));
contentPane.addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent me) {
showPopup(me); // showPopup() is our own user-defined method
}
}) ;
setSize(375, 250);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setVisible(true);
}
void showPopup(MouseEvent me) {
if(me.isPopupTrigger())
popup.show(me.getComponent(), me.getX(), me.getY());
}
public static void main(String args[]) {
new JPopupMenuTest();
}
}Output
Updated on: 07-Feb-2020
1K+ Views
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