JAVA_VERSION get version of Java Virtual Machine

this gives a long string with more detail version("-java")

% these give the Matlab version, not the JVM version.
% java.lang.Runtime.version()
% java.lang.Runtime.getRuntime().version

function v = java_version()

try
  v = javaMethod("getProperty", "java.lang.System", "java.version");
catch
  v = '';
end

v = string(v);

end