MATLAB: Which Java Virtual Machine is used by an application compiled using the MATLAB Compiler 4.3 (R14SP3)

Question

I would like to specify the JVM used by my MATLAB Compiled application.

Answer 1

A MATLAB compiled application uses the MATLAB Compiler Runtime's (MCR) embedded Java VM (Virtual Machine) unless the MATLAB_JAVA environment variable points to another one.

Thus, following are the scenarios:

1) If MATLAB_JAVA environment variable is not set or is empty, the MCR's JVM is used.

2) If MATLAB_JAVA environment variable is set to point to the root directory of a particular JVM, the JVM being pointed to is used by MATLAB.

Also, here is a simple test to find out which JVM is used by a compiled application:

1) Create a MATLAB function that outputs the JAVA version:

function checkJavaVersion
      version -java

2) Compile this application using the MCC command:

mcc -m checkJavaVersion

3) Run this application to check the version of JAVA that a compiled MATLAB application will use. From a shell or terminal:

checkJavaVersion