Adding a submenu

Question

So I tried to look at the Java docs for help for this but got confused pretty quickly. I am trying to add a submenu to the menu item 'Edit' which will have submenus Copy and Paste, and I'm note sure how to do it. I have a submenu variable created, do I use that? Please help, thank you. Code is below.

import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;

public class MyJFrame extends JFrame
{
JMenuBar menubar;
JMenu menu, submenu;
JMenuItem mi;

public MyJFrame(String title)
{
    super(title);
    menubar = new JMenuBar();
    setJMenuBar(menubar);
    buildMenu();
}

void buildMenu()
{
menu = new JMenu("File");

           mi = new JMenuItem("New");
           menu.add(mi);
           menubar.add(menu);

           mi = new JMenuItem("List Files");
           menu.add(mi);
           menubar.add(menu);
           menu.addSeparator();

           mi = new JMenuItem("Save As");
           menu.add(mi);
           menubar.add(menu);
           menu.addSeparator();

           mi = new JMenuItem("Close");
           menu.add(mi);
           menubar.add(menu);

    menu = new JMenu("Tools");

           mi = new JMenuItem("Sort");
           menu.add(mi);
           menubar.add(menu);

           mi = new JMenuItem("Search");
           menu.add(mi);
           menubar.add(menu);

           mi = new JMenuItem("Edit");
           menu.add(mi);
           menubar.add(menu);
           mi = new JMenuItem("Copy");
           menu.add(mi);
           menubar.add(menu);
           mi = new JMenuItem("Paste");
           menu.add(mi);
           menubar.add(menu);
}
}

Sharad Ag. · Accepted Answer · 2015-05-02T09:26:32.743

6

create a Menu instead of a MenuItem for Edit, and add MenuItems Copy and Paste. Then Add edit menu to Tools Menu .

   menu = new JMenu("Tools");

       mi = new JMenuItem("Sort");
       menu.add(mi);
       mi = new JMenuItem("Search");
       menu.add(mi);
      JMenu med = new JMenu("Edit");
        mi = new JMenuItem("Copy");
       med.add(mi);
        mi = new JMenuItem("Paste");
       med.add(mi);
       menu.add(med);
     menubar.add(menu);

Note: I have edited the last part of your code. Just replace the code from tools menu to this and try this. If it gets error, tell me.

edited May 02 '15 at 09:26

answered May 02 '15 at 09:16

Sharad Ag.

98
5

2

Why do you add `menu` to `menubar` three times? You should remove that. – Olivier Grégoire May 02 '15 at 09:24
Done, actually i had just copied and edited the last past of his code. So it got left... – Sharad Ag. May 02 '15 at 09:27
Good. Mistakes can happen ;) Though I'm not your bro, sorry. – Olivier Grégoire May 02 '15 at 09:30

score 3 · Answer 2 · answered May 02 '15 at 09:19

Here is a simple example of how you can do it:

JMenuBar menuBar = new JMenuBar();

// Edit Menu
JMenu editMenu = new JMenu("Edit");    
menuBar.add(editMenu);

// Edit -> Copy
JMenuItem copyMenuItem = new JMenuItem("Copy");
editMenu.add(copyMenuItem);

// Edit -> Paste
JMenuItem pasteMenuItem = new JMenuItem("Paste");
editMenu.add(pasteMenuItem);

Arthur Spooner · Answer 3 · 2015-05-02T11:03:07.167

0

Simplified excerpt from https://docs.oracle.com/javase/tutorial/uiswing/components/menu.html

Result image

menu.addSeparator();
submenu = new JMenu("A submenu"); 

menuItem = new JMenuItem("An item in the submenu");
submenu.add(menuItem);

menuItem = new JMenuItem("Another item");
submenu.add(menuItem);
menu.add(submenu); // you add the submenu to your existing menu

edited May 02 '15 at 11:03

answered May 02 '15 at 09:57

Arthur Spooner

11
2

Adding a submenu

3 Answers3