-var env_ref = new JniEnvRef
-var jvm = new JavaVM(env_ref)
-var env = env_ref.jni_env
+var builder = new JavaVMBuilder
+builder.options.add "-Djava.class.path=."
+#alt1#builder.options.clear
+#alt1#builder.options.add "-Djava.class.path=/tmp/"
+var jvm = builder.create_jvm
+var env = builder.jni_env