A.If the value is not present, a NoSuchElementException is thrown at run time.

B.It always executes the System.out::print statement.

C.If the value is not present, a NullPointerException is thrown at run time.

D.If the value is not present, nothing is done.

A.System.out is the standard output stream. The stream is open only when System.out is called.

B.System.in is the standard input stream. The stream is already open.

C.System.out is an instance of java.io.OutputStream by default.

D.System.in cannot reassign the other stream.

A.A ClassCastException is thrown at runtime.

B.AnotherClass#methodA()AnotherClass#methodA()

C.The compilation fails.

D.SomeClass#methodA()AnotherClass#methodA()

E.AnotherClass#methodA()SomeClass#methodA()

F.SomeClass#methodA()SomeClass#methodA()

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.Replace public Color(int c) with private Color(int c).

B.Replace int c; with private int c;.

C.Replace int c; with private final int c;.

D.Replace enum Color implements Serializable with public enum Color.

E.Replace enum Color with public enum Color.