Question

I’m have no trouble when creating menu bar and its item. But now, when I get a question how to make the menu items appeared as column & rows-like table shaped, I really don’t know about that.

The goals is to create this kind of menu items using java.
Check this link.

And right now, I just think that I should use a jpanel as menu item, and then applying a flowlayout and then adding many jlabel(s) as I could as menuitem inside the grid. But wouldn’t it worst?
What’s the best deal to create the menu items such as the image preview on the above links?

I tried google, but found no related cases. CMIIW.

Answer 1

The popup menu of a JMenu instance is a standard container, so you can add to it whatever you want. It has a default layout, but you can change it.

Something like in your mockup is created by this code:

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

public class Test {
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                JFrame frame = new JFrame("Menu test");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setSize(new Dimension(600, 400));
                JMenuBar menuBar = new JMenuBar();
                JMenu menu = new JMenu("Test");
                JPopupMenu popupMenu = menu.getPopupMenu();
                popupMenu.setLayout(new GridLayout(5, 5));
                for (int r = 0; r < 5; r++) {
                    for (int c = 0; c < 5; c++) {
                        popupMenu.add(new JMenuItem("(" + (r + 1) + ", " + (c + 1) + ")"));
                    }
                }

                menuBar.add(menu);
                frame.setJMenuBar(menuBar);

                frame.setVisible(true);
            }
        });
    }

}