A.setLeft and setRight must be protected.

B.isValid must be public.

C.left and right must be private.

D.left, right, setLeft, and setRight must be private.

A.IntStream.range(1, 100).mapToObj(FizzBuzz::convert).forEach(System.out::println);

B.IntStream.rangeClosed(l, 100).map(FizzBuzz::convert).forEach(System.out::println);

C.intstream.rangeclosed(l, 100).mapToObj{FizzBuzz::convert).forEach(System.out::printIn);

D.IntStream.ranged, 100).map(FizzBuzz::convert).forEach(System.out::println);

A.You set up the Java development environment for a specific operating system when you install the JDK.

B.The Java development environment is set up for all operating systems by default.

C.Setting up the Java development environment requires that you also install the JRE.

D.Setting up the Java development environment occurs when you install an IDE before the JDK.

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.Double d = list.get(0);

B.double f = list.get(0);

C.Integer a = Integer.valueOf(list.get(0));

D.Double e = Double.valueOf(list.get(0));

E.int c =list.get(0);

F.Integer b = list.get(0);