NEW QUESTION 1
Which three must be used when using the java.util-concurrent package to execute a task that returns a result without blocking?

• A. Future
• B. Runnable
• C. ExecutorService
• D. Callable
• E. Thread
• F. Executor

Answer: ACD

NEW QUESTION 2
Which is true regarding the jaa.nio.file.Path interface?

• A. Implementation of this Interface are nor safe for use by multiple concurrent threads.
• B. implementations of this interface arc immutable.
• C. The interface extends the watchservice Interface.
• D. Paths associated with the default provider are not interoperable with the java.io.File clas

Answer: B

NEW QUESTION 3
Which statement Is true about the single abstract method of the java.util.function.Function Interface?

• A. It accepts an argument and produces a result of any data type.
• B. It accepts one argument and returns void.
• C. It accepts one argument and always produces a result of the same type as the argument.
• D. It accepts one argument and returns boolea

Answer: A

NEW QUESTION 4
Which two states are valid for a watch key?

• A. Ready
• B. Not Runnable
• C. Runnable
• D. Does not Exist
• E. Signalled

Answer: AE

NEW QUESTION 5
Given the code fragment:

Which two code fragments, when Inserted Independently at line 14, enable the code to compile?

• A. Map<String, List<String>> category = new HashMap<>> () ;
• B. Mae<String, List<String>> category = new HashMap<String, List<String>> () ;
• C. Map<String, List<String>> category = new HashMap<String, ArrayList<String>> () ;
• D. Map<String, List<String>> category = new HashMap<List> () ;
• E. Map<String, List<String>> category = new HashMap<String, List<>> () ;
• F. Map<String, List<String>> category = new HashMap<> () ;

Answer: BF

NEW QUESTION 6
You are asked to implement an interface that processes a batch of transaction objects and returns a discounted value for each transaction as a double primitive value.
Which interface can you use to accomplish the task?

• A. ToDoubleFunction
• B. DoubleConsumer
• C. DoubleFunction
• D. DoubleSuppLier

Answer: A

NEW QUESTION 7
Given the code fragment:

What is the result?

• A. NULL
• B. An exception is thrown at runtime.
• C. blank
• D. Compilation fails
• E. invalid

Answer: B

NEW QUESTION 8
Given:

You have been asked to ensure that the run methods of both the worker and Master classes are executed.
Which modification meets the requirement?

• A. At line n2, insert cyclicBarrier cb = new cyclicBarrier {2, master} ;
• B. At line n2, insert cyclicBarrier cb = new cyclicBarrier {1, master} ;
• C. At line n2, insert cyclicBarrier cb = new cyclicBarrier {1) ;
• D. At line n2, insert cyclicBarrier cb = new cyclicBarrier{master) ;

Answer: B

NEW QUESTION 9
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