Given:

Why does D cause a compilation error?

• A.D does not define any method.
• B.D inherits a() only from C.
• C.D extends more than one interface.
• D.D inherits a() from B and C but the return types are incompatible.

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Given:

You want to use the myResource class in a try-with-resources statement. Which change will accomplish this?

• A.Implement AutoCloseable and override the autoClose method.
• B.Extend AutoCloseable and override the autoClose method.
• C.Extend AutoCloseable and override the close method.
• D.Implement AutoCloseable and override the close method.

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Given this enum declaration:

Examine this code:
System.out.println(Alphabet.getFirstLetter());
What code should be written at line 3 to make this code print A?

• A.String getFirstLetter() { return A.toString(); }
• B.final String getFirstLetter() { return A.toString(); }
• C.static String getFirstLetter() { return A.toString(); }
• D.static String getFirstLetter() { return Alphabet.values()[1].toString(); }

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Given:

After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the values array is partially sorted?

• A.after line 8
• B.after line 6
• C.after line 5
• D.after line 10

Correct Answer: B

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Given:

What is the output?

• A.300
• B.Exception
• C.200
• D.100

Correct Answer: A

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