Given:

Which line of code results in a compilation error?

• A.line n1
• B.line n3
• C.line n2
• D.line n4

Correct Answer: D

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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 the code fragment:

What is the result?

• A.The compilation fails.
• B.abc def
• C.ad be cf
• D.An ArrayIndexOutOfBoundsException is thrown at runtime.
• E.ab cd ef

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Which two statements are true about Java modules? (Choose two.)

• A.Classes found in -classpath are part of an unnamed module.
• B.If a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.
• C.Any named module can directly access all classes in an automatic module.
• D.Modular jars loaded from --module-path are automatic modules.
• E.Modular jars loaded from -classpath are automatic modules.

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Given:

What is required to make the Foo class thread safe?

• A.No change is required.
• B.Make the declaration of lock static.
• C.Replace the lock constructor call with new ReentrantLock (true).
• D.Move the declaration of lock inside the foo method.

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