Given:

executed using command:
java Hello "Hello World" Hello World
What is the output?

• A.Hello World Hello World
• B.HelloHello WorldHelloWorld
• C.Hello WorldHello World
• D.Hello WorldHelloWorld
• E.An exception is thrown at runtime.

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Given:

What is the result?

• A.2,34,34,5
• B.2,34,54,5
• C.2,54,54,5
• D.2,34,54,3

Correct Answer: C

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Given:

You wants to make the reduction operation parallelized.
Which two modifications will accomplish this?

• A.Replace line 1with int sum = numbers. ParallelStream ( ). Reduce (0, (n, m ) -> n + m);
• B.Replace line 1 with int sum = numbers. Stream (). Interate (0, a -> a+1. Reduce (0, (n m) -> n+m);
• C.Replace line 1with int sum = number. Stream ( ) . flatMap (a -> a) .reduce (0, (n, m) -> n +m );
• D.Replace line 1 with int sum = numbers. Parallel ( ). Stream ( ). Reduce (0, (n, m ) -> n + m);
• E.Replace line 1with int sum = number.stream. parallel ( ). Reduce (0, (n, m) -> n + m);

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Which two statements correctly describe capabilities of interfaces and abstract classes? (Choose two.)

• A.Interfaces cannot have instance fields but abstract classes can.
• B.Both interfaces and abstract classes can have final methods.
• C.Interfaces cannot have static methods but abstract classes can.
• D.Interfaces cannot have methods with bodies but abstract classes can.
• E.Interfaces cannot have protected methods but abstract classes can.

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Given:

What is the result?

• A.Hat at store 4
• B.At once 1
• C.At once 0
• D.An indexOutofBoundsException is thrown at runtime.
• E.Hat at store 1

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