How to adjust Java heap space while updating license file? Can't open MATLAB to increase heap space

Question

T Nguyen 2022-11-7

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https://ww2.mathworks.cn/matlabcentral/answers/1844998-how-to-adjust-java-heap-space-while-updating-license-file-can-t-open-matlab-to-increase-heap-space

回答： Guru Kumaresan 2022-11-11

I'm on Windows 10, currently have MATLAB 2018a (Student edition) and am currently trying to update my license file with a R2022b installer (also for students).

It's not working because I get the error 'Java heap space' and MATLAB closes/crashes. See below for screencapture.

I have looked this problem up and it requires you to increase Java heap space. However, the steps require you to open MATLAB first--this is clearly not something I can do because I'm stuck at step one.

What recourse do I have? Is there a way to adjust Java heap space from outside the application with a configuration file or something?

Thanks in advance for the help--I need MATLAB for my studies.