void (String[] args) { List<String> x = new ArrayList<String>(); CollectionsKt.filter(x, new Function1<String, Boolean>() { @Override public Boolean invoke(String o) { return o.equals("a"); } }); Lazy<String> lazy = LazyKt.lazy(LazyThreadSafetyMode.NONE, new Function0<String>() { @Override public String invoke() { return "aaa"; } }); }