JDK provider and version disparities
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I am using Matlab Compiler SDK to make `intlinprog` invokable from Java. I don't program in Java (yet), but have used C++/STL 15 years ago, and used OOP in VBA and Matlab. Java coding logic will probably not be a showstopper for a newbie like me; design patterns, may be more of a challenge, but my stumbling block right now is Java/JDK versions. I've read all I can about them, and now have to discover the reality by doing.
Disparity in JDK provider
I ran into my first version puzzlement in Matlab documentation on configuring the java environment:
[1] https://www.mathworks.com/help/compiler_sdk/ml_code/configure-your-java-environment.html
It says to find Java version in my MATLAB installation using `version -java`. In my MATLAB, the provider is Oracle:
Java 1.8.0_181-b13 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
However, the documentation [1] says to get the JDK from AdoptOpenJDK. I'm wondering whether this is a mistake? I have in fact installed AdoptOpenJDK's jdk-11.0.8.10-openj9, but I haven't found an Oracle JDK at their website.
Disparity in Java versions
Since Matlab has its own requirements for JDK version, is there a problem if the system that will invoke the Java-wrapped `intlinprog` uses a different JDK? I've read that Java is largely backward compatible, but I don't know what that means in this context.
Thanks for any clarification on the above disparities, and any reconciliation needed. Meanwhile, I will forge ahead with the documentation without changing my JDK unless I run into problems.
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Todd Flanagan
2020 年 10 月 29 日
編集済み: Todd Flanagan
2020 年 10 月 29 日
You are correct that MATLAB ships with an Oracle version of the JRE. Compiler SDK for Java requires a JDK to compile Java code. MATLAB currently supoprts Java 8, so you are free to use whichever 1.8 compliant JDK you prefer.
5 件のコメント
Heng gao
2021 年 5 月 5 日
This sounds different to mine.
I jsut installed Matlab2021a.
When i run version-java, it is a oracle java1.8,
but when i run compiler SDK, it is using java11.
This cause the produced by compiler SDK java code is uncompatible to run.
Also, my shell is using java1.8 as well
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