$ javac broken/JaxbRemoved.java     (1.8.0_504)
(compiled cleanly)

$ javac broken/JaxbRemoved.java     (11.0.32.1)
broken/JaxbRemoved.java:1: error: package javax.xml.bind does not exist
import javax.xml.bind.JAXBContext;
                     ^
broken/JaxbRemoved.java:6: error: cannot find symbol
        System.out.println(JAXBContext.class.getName());
                           ^
  symbol:   class JAXBContext
  location: class JaxbRemoved
2 errors

$ javac broken/VarWithoutLambda.java     (11.0.32.1)
broken/VarWithoutLambda.java:6: error: invalid lambda parameter declaration
        BiFunction<Integer, Integer, Integer> f = (var a, Integer b) -> a + b;
                                                  ^
  (cannot mix 'var' and explicitly-typed parameters)
1 error