Given:

Which is true about line 1?

• 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.

Correct Answer: D

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Given:

What is the result?

• A.The compilation fails.
• B.1.99,2.99,0
• C.1.99,2.99,0.0
• D.1.99,2.99

Correct Answer: A

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Given:

Which two are correct? (Choose two.)

• A.The output will be exactly 2 1 3 4 5.
• B.The program prints 1 4 2 3, but the order is unpredictable.
• C.Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.
• D.Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.
• E.Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.

Correct Answer: B,D

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Given the code fragment:

What is the result?

• A.2
• B.-3
• C.-1
• D.1

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Which statement about a functional interface is true?

• A.It is declared with a single abstract method.
• B.It cannot have any private methods and static methods.
• C.It must be defined with the public access modifier.
• D.It must be annotated with @FunctionalInterface.
• E.It is declared with a single default method.

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