warning(‘off’, ‘MATLAB:HandleGraphics:ObsoletedProperty:JavaFrame’)
jFrame = get(handle(gcf), ‘JavaFrame’)
‘Warning: The JavaFrame figure property will be removed in a future release. For more information see UI Alternatives for MATLAB Apps on mathworks.com.’
jFrame =
com.mathworks.hg.peer.HG2FigurePeer@82c57b3

Workaround for silencing this warning is to issue
warning(‘off’, ‘MATLAB:ui:javaframe:PropertyToBeRemoved’)

before executing get(handle(gcf), ‘JavaFrame’) call.

I’m using Matlab R2024a, but it is seems that it is actual at least for Matlab R2019b (https://neuroimage.usc.edu/forums/t/silencing-matlab-warning-messages-about-javacomponent/22305/2).

@Richard – http://undocumentedmatlab.com/blog/hg2-update#observations

Undefined function or variable ‘fFigureClient’

Is there any replacement for functionality?

@Stijn – try adding pause(0.5) after the drawnow. If it works then you can play with the pause duration to find the minimal duration value that works well on your specific system.

jFrame = get(handle(figs(1)),'JavaFrame');
jFrame.setMaximized(true)
% nothing that I tried helps (drawnow, ...)
pos0 = get(figs(1),'Position');

When I first saw this, I thought: “simple: just add drawnow”, but that didn’t help.
Any idea?

Thanks. I didn’t know what that resize stuff was – I just had it in there because other code above did, and I thought I needed it. I just removed that line and now everything works great. Thanks for figuring it out for me!

@IA – I’m afraid that this is the behavior for figure windows that have Resize=’off’. If you set Resize=’on’ (the default value), then it will work as you expect vis-a-vis the taskbar. If you wish to get the Resize=’on’ behavior while still disabling resizing you can use the following code snippet:

jFrame = get(handle(gcf),'JavaFrame');  % Resize='on'
drawnow; pause(0.1);
try
    jClient = jFrame.fHG1Client;  % HG1
catch
    jClient = jFrame.fHG2Client;  % HG2
end
jClient.setMaximized(true);
jWindow = jClient.getWindow;
maxSize = jWindow.getSize;
jWindow.setMinimumSize(maxSize);
jWindow.setMaximumSize(maxSize);
jWindow.setLocation(java.awt.Point(0,0));

It’s not perfect, but close enough…

Yair, it works now. Just one little problem. It’s SO maximized that it covers up the Windows 7 task bar at the bottom of my screen. Is there any way to have it maximized but still have the taskbar show up? That’s the way maximizing normally works.

@IA – Probably because the figure window is not fully rendered when the jFrame code is reached. This is due to the fact that in R2014b, the figure function no longer blocks execution until the figure is fully rendered.

I suggest moving the drawnow; pause(0.1); code to before the jFrame code, rather than after it – this will ensure that the figure is fully rendered at that time:

 
% Enlarge figure to full screen.
jFrame = get(handle(gcf),'JavaFrame');
set(gcf,'Resize','off');
drawnow; pause(0.1);
try
    jFrame.fHG1Client.setMaximized(true);  % HG1
catch
    jFrame.fHG2Client.setMaximized(true);  % HG2
end

 
% Enlarge figure to full screen.
jFrame = get(handle(gcf),'JavaFrame');
set(gcf,'Resize','off');
try
    jFrame.fHG1Client.setMaximized(true);  % HG1
catch
    jFrame.fHG2Client.setMaximized(true);  % HG2
end
drawnow; 
pause(0.1);

If I just let this run in R2014b (HG2) it throws an exception:

 
Error using test (line 60)
Java exception occurred:
java.lang.NullPointerException
	at com.mathworks.hg.peer.FigureFrameProxy.setMaximized(FigureFrameProxy.java:302)
	at com.mathworks.hg.peer.FigureMediator.setMaximized(FigureMediator.java:468)

and does not maximize the figure. HOWEVER, if I put a breakpoint anywhere in the try/catch, and it stops there, and I hit F5 to continue, it works just fine with no exception at all being thrown, just an orange warning:

 
Warning: figure JavaFrame property will be obsoleted in a future release. For more information see the JavaFrame resource on the MathWorks web site. 
> In test at 55 

Why does it work only if there is a breakpoint stopped at and not when I just run it non-stop like I’d want?