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Oracle Exam 1Z0-829 Topic 4 Question 37 Discussion

Actual exam question for Oracle's 1Z0-829 exam
Question #: 37
Topic #: 4
[All 1Z0-829 Questions]

Given the code fragment:

Which code fragment invokes all callable objects in the workers set?

A)

B)

C)

D)

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Suggested Answer: C

The code fragment in Option C invokes all callable objects in the workers set by using the ExecutorService's invokeAll() method. This method takes a collection of Callable objects and returns a list of Future objects representing the results of the tasks. The other options are incorrect because they either use the wrong method (invokeAny() or submit()) or have syntax errors (missing parentheses or semicolons).Reference:AbstractExecutorService (Java SE 17 & JDK 17) - Oracle


by Brandon at May 05, 2025, 08:30 AM

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Yan
I'm not sure, but I think Option A might also be a possibility.
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Jess
4 days ago
I agree with Barabara, Option C looks like the right choice.
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Barabara
10 days ago
I think the correct answer is Option C.
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Jeannetta
11 days ago
I think Option B is the correct answer. It seems to be the only one that iterates over the workers set and invokes all the callable objects.
upvoted 0 times
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