Given:

What is the result?

• A.The compilation fails due to an error in line 2.
• B.The compilation fails due to an error in line 1.
• C.The compilation fails due to an error in line 4.
• D.The compilation fails due to an error in line 5.
• E.17
• F.The compilation fails due to an error in line 3.
• G.42

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Given:

Which one is correct?

• A.An IllegalThreadStateException is thrown at run time.
• B.Three threads are created.
• C.The compilation fails.
• D.Four threads are created.

Correct Answer: A

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Assuming the Widget class has a getPrice method, this code does not compile:

Which two statements, independently, would allow this code to compile? (Choose two.)

• A.Replace line 5 with widgetStream.filter(a > ((Widget)a).getPrice() > 20.00).
• B.Replace line 1 with List<Widget> widgetStream = widgets.stream();.
• C.Replace line 5 with widgetStream.filter((Widget a) > a.getPrice() > 20.00).
• D.Replace line 4 with Stream<Widget> widgetStream = widgets.stream();.

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Which two statements independently compile? (Choose two.)

• A.List<? super Short> list = new ArrayList<Number>();
• B.List<? super Number> list = new ArrayList<Integer>();
• C.List<? extends Number> list = new ArrayList<Byte>();
• D.List<? extends Number> list = new ArrayList<Object>();
• E.List<? super Float> list = new ArrayList<Double>();

Correct Answer: A,C

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What change will cause the code to compile successfully?

• A.Insert PriceChecker (?) prod on line 1.
• B.Insert PriceChecker <> prod on line 1.
• C.Insert PriceChecker <Plushy extends Products> prod on line 1.
• D.Insert PriceChecker <Electronics> prod on line 1.

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