List<String> features = new ArrayList<String>();
        features.add("feature1");
        features.add("feature2");
        unit.setFeatures((String[])features.toArray());

--

Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to [Ljava.lang.String;
	at htest.logic.Main.main(Main.java:30)