A.Aman Peter Tom

B.Tom Aman Peter

C.Aman Tom Peter

D.Tom Peter Aman

A.public String toString() { return String.valueOf(ALPHA.v); }

B.public String toString() { return String.valueOf(Letter.values()[1]); }

C.public String toString() { return String.valueOf(v); }

D.String toString() { return "200"; }

A.char

B.List<String>

C.List<Character>

D.String

A.3 5 3 3

B.3 3 3 3

C.3 5 3 5

D.5 5 3 3

A.UnaryOperator<Interger >uo = x -> { return x * 3; };

B.UnaryOperator<Interger >uo = (int x) -> x * 3;

C.UnaryOperator<Interger >uo = var x -> { return x 3 ; };

D.UnaryOperator<Interger > uo = (var x ) -> (x * 3);