A.Hello myH = new Hello();
Hello.Greeting myG = myH.new Hello.Greeting();
myG.sayHi();

B.Hello myH = new Hello();
Hello.Greeting myG = myH.new Greeting();
myG.sayHi();

C.Hello myH = new Hello(); Greeting myG = new Greeting(); myG.sayHi ();

D.Hello.Greeting myG = new Hello.Greeting() myG.sayHi();

A.Function<Integer, Integer> f = n -> n * 2;

B.Function<Integer> f = n -> n * 2;

C.Function<int> f = n -> n * 2;

D.Function<int, int> f = n -> n * 2;

E.Function f = n -> n * 2;

A.It fails to compile.

B.nothing

C.null

D.Student

E.java.lang.IllegalAccessException is thrown.

A.Input: Echo:

B.Input: Helloworld Echo: Helloworld

C.Input:
Then block until any input comes from System.in.

D.Input:
Echo: Helloworld

E.A NullPointerException is thrown at run time.

A.BiFunction

B.ToDoubleFunction

C.LongConsumer

D.Supplier