HAS_JAVA detect if JVM is available
Ref: https://www.mathworks.com/help/matlab/ref/usejava.html
function y = has_java() y = usejava('jvm'); end %!assert(islogical(stdlib.has_java()))
Ref: https://www.mathworks.com/help/matlab/ref/usejava.html
function y = has_java() y = usejava('jvm'); end %!assert(islogical(stdlib.has_java()))