# Called by `jvm` and `jni_env` to instantiate a Java Virtual Machine.
	# Used mostly for the FFI with Java.
	protected fun create_default_jvm
	do
		var builder = new JavaVMBuilder

		# By default, look for Java classes in a jar file the same directory as the executable
		builder.options.add "-Djava.class.path={sys.program_name}.jar"

		var jvm = builder.create_jvm
		assert jvm != null else print "JVM creation failed"

		self.jvm = jvm
		assert not jvm.address_is_null
		self.jni_env = jvm.env
		assert not jni_env.address_is_null
	end