Description Robert Sermak 2019-02-07 06:11:41 EST

Created attachment 277488 [details]
project containing problematic case

environment: Oracle Java 11.0.2, Eclipse 4.11.M1, Windows 10

steps to reproduce:

-import attached project java11.zip 
-open class VarInLambda and see that there is a compile error on construction:
        ArrayList<String> list = new ArrayList<>();
        list.stream()
                .map((var s) -> s.toLowerCase())
                .collect(Collectors.toList());

saying:
The method map(Function<? super String,? extends R>) in the type Stream<String> is not applicable for the arguments ((var s) -> {})

The code compiles without errors under Java 11 javac.
If we replace 'var s' with 'String s' everything works fine.