Given the code fragment:

What is the result?

• A.AnArrayIndexOutOfBoundsException is thrown at runtime
• B.25
• C.20
• D.29
• E.Compilation fails

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Which two reasons should you use interfaces instead of abstract classes? (Choose two.)

• A.You expect that unrelated classes would implement your interfaces.
• B.You want to declare non-static on non-final fields.
• C.You want to share code among several closely related classes.
• D.You expect that classes that implement your interfaces have many common methods or fields, or require
  access modifiers other than public.
• E.You want to take advantage of multiple inheritance of type.

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Given the code fragment:

And given the requirements:
* If the value of the qty variable is greater than or equal to 90, discount = 0.5
* If the value of the qty variable is between 80 and 90, discount = 0.2 Which two code fragments can be independently placed at line n1 to meet the requirements?

• A.Option C
• B.Option A
• C.Option B
• D.Option E
• E.Option D

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Given the code fragment:
List<Integer> list1 = Arrays.asList(10, 20);
List<Integer> list2 = Arrays.asList(15, 30);
//line n1
Which code fragment, when inserted at line n1, prints 10 20 15 30?

• A.Stream.of(list1, list2)
  . flatMapToInt(list -> list.stream())
  . forEach(s -> System.out.print(s + " "));
• B.list1.stream()
  . flatMap(list2.stream().flatMap(e1 -> e1.stream())
  . forEach(s -> System.out.println(s + " "));
• C.Stream.of(list1, list2)
  . flatMap(list -> list.stream())
  . forEach(s -> System.out.print(s + " "));
• D.Stream.of(list1, list2)
  . flatMap(list -> list.intStream())
  . forEach(s -> System.out.print(s + " "));

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Given the code fragment:
List<String> nL = Arrays.asList("Jim", "John", "Jeff");
Function<String, String> funVal = s -> "Hello : ".contact(s);
nL.Stream()
.map(funVal)
.peek(System.out::print);
What is the result?

• A.The program prints nothing.
• B.A compilation error occurs.
• C.Jim John Jeff
• D.Hello : Jim Hello : John Hello : Jeff

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