Using RolloverIcon requires setting RolloverEnabled to true (default=false):

jMenuItem.setRolloverEnabled(true);
jMenuItem.setRolloverIcon(icon1);
jMenuItem.setRolloverSelectedIcon(icon2);

Thanks

@Sneha – add a short drawnow; pause(0.01) between the calls to jFileMenu.doClick and the call to jFileMenu.getMenuComponent.

More information:
* http://undocumentedmatlab.com/blog/matlab-and-the-event-dispatch-thread-edt
* http://undocumentedmatlab.com/blog/solving-a-matlab-hang-problem

Hi Yair,
Apologies for my late reply. I did not attach the code previously sorry for that
The below is the code written

jf = get(hObject,'JavaFrame');
jmb = jf.fHG2Client.getMenuBar;
jFileMenu = jmb.getComponent(0);
jFileMenu.doClick;  %% open menu
jFileMenu.doClick; % close the menu
jvalue1 = jFileMenu.getMenuComponent(0);
jvalue2=jFileMenu.getMenuComponent(1);
jvalue3 = jFileMenu.getMenuComponent(2);

So this code if I execute line by line I am able to get tool tip messages but i run code as a .m file I gt that error

@Sneha – as I explained here, the menu needs to be opened once in order for its menu items to become visible.

Java exception occurred:
java.lang.ArrayIndexOutOfBoundsException: No such child: 0
	at java.awt.Container.getComponent(Unknown Source)
	at javax.swing.JMenu.getMenuComponent(Unknown Source)

if I execute the code one line at a time I did not face any issue .
Could you please help me with the issue

I would like to make the labels editable in the menu itself. For example that you can richt-click on the word ‘Save’, a box pops up where you can select ‘rename’, and that the word ‘Save’ becomes editable. maybe with an editbox style uicontrol at the exact location of the word ‘Save’. Is there a way to do this? What i do now is, i use an inputdlg box. But that is less userfriendly. Below is a function that shows and hides lines in a figure based on their displayname where i’d like to use this.

function showhide(h,a)
   f = findall(gcf,'label','show/hide')
   if numel(f)
      s2=findall(f,'position',2)
      if numel(s2)
         s2.Separator='on'
      end
      if strcmp(h.Label,'add')
         str = inputdlg('enter a string');
         uimenu(f,'label',str{1},'Callback',@showhide);
      else
         l = findall(gcf,'type','line');
         c = char(setdiff({'on' 'off'},get(h,'checked')));
         set(h,'Checked',c);
         set(l(~cellfun('isempty',strfind(get(l,'DisplayName'),h.Label))),'visible',c,'handlevisibility',c);
      end
   else
      f=uimenu(gcf,'label','show/hide');
      uimenu(f,'label','add','Callback',@showhide);
   end
end

i am amin from iran

maybe use pause …it is possible

@Adam – on some modern platforms, the menu items’ bgcolor is dynamically set by the system and cannot easily be overridden. In other words,

jSave.setBackground(java.awt.Color.yellow)

has no visible effect.

However, we can still use HTML/CSS, as follows:

padding = [' &' repmat(' ',1,30)];  % space padding to extend the background area
label = ['Save' padding]; 
jSave.setText(label)