Is the entirety of the system folder generated by the MATLAB Compiler SDK web installer necessary to deploy a Java package?

I've written a MATLAB function in MATLAB R2022a and deployed it as a Java package called "MyJavaPackage.jar".

When using MATLAB Compiler SDK to create a Java package for my MATLAB function, it appears to create a web installer that does two things:

1. Installs the correct MATLAB Compiler Runtime version.
2. Installs a "system" folder for the Java package. It appears the system folder contains multiple documentation files and one non-documentation file that is "MyJavaPackage.jar". Can I provide just the "MyJavaPackage.jar" file to my end user, or do I need to also provide the remaining contents of the system folder as well (eg. "doc" subdirectory, "default_icon" .ICO file, "GettingStarted" webpage, etc.)?

It would simplify things a lot if I can forgo sending these additional files to the end user and just have them place "MyJavaPackage.jar" exactly where it needs to be in their working directory. Of course, they would have to download and install the correct MATLAB Compiler Runtime version themselves separately.

I'm interested in the answer to this question on both Windows 10 and Ubuntu.

Answer 1

[MathWorks Support Team]

Compiled MATLAB R2022a code comprising only MATLAB files is platform independent, as are Java .JAR files in general. You can execute such files on any platform (eg. Windows, Mac, Linux), provided that the platform has the correct MATLAB Compiler Runtime version installed. 

However, for compiled MATLAB R2022a code containing MEX files, please note that MEX files are platform dependent and consequently, there are some additional steps that you must perform to create the Java package as described in the documentation linked below:

https://www.mathworks.com/help/releases/R2022a/compiler_sdk/java/ensuring-multi-platform-portability.html

In summary, the end user of the Java package does not need any additional files besides the .JAR file created by the web installer within the system folder. They only need the .JAR file, as well as the appropriate version of MATLAB Compiler Runtime installed on their machine.