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Exam 1z0-809 topic 1 question 49 discussion

Actual exam question from Oracle's 1z0-809
Question #: 49
Topic #: 1
[All 1z0-809 Questions]

Which statement is true about java.util.stream.Stream?

  • A. A stream cannot be consumed more than once.
  • B. The execution mode of streams can be changed during processing.
  • C. Streams are intended to modify the source data.
  • D. A parallel stream is always faster than an equivalent sequential stream.
  • E. Stream operation accepts lambda expressions as its parameters.
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Suggested Answer: A 🗳️
by varconite at Dec. 6, 2020, 8:58 a.m.

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varconite
Highly Voted 4 years, 6 months ago
Answer is A
upvoted 7 times
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6c84cb9
Most Recent 10 months, 4 weeks ago
The correct answers are A and E: A: A stream cannot be consumed more than once. E: Stream operations accept lambda expressions as their parameters.
upvoted 1 times
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asdfjhfgjuaDCV
1 year, 3 months ago
A is the answer
upvoted 1 times
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steefaand
1 year, 4 months ago
Selected Answer: A
A is true as exception is thrown if same stream is used after terminal operation is run on it.
upvoted 1 times
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iSnover
1 year, 5 months ago
Selected Answer: A
The answer is letter A, a stream can only be consumed once. Regarding the letter E, it is false, pay attention that the statement talks about the stream parameter and not the method parameter, you cannot use a lambda expression as a stream parameter, it is a trick.
upvoted 1 times
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duydn
1 year, 9 months ago
Selected Answer: A
A & E are correct!
upvoted 1 times
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WilsonKKerll
3 years, 3 months ago
A is NOT. Can use peak() consumed more than one. Answer is B. Because can change parallel stream to change mode.
upvoted 1 times
iSnover
1 year, 5 months ago
No, the "peek()" method is an intermediate operation
upvoted 1 times
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HanenBA
3 years, 4 months ago
Selected Answer: A
After the terminal operation is performed, the stream pipeline is considered consumed, and can no longer be used. For Intermediate operations,they always return a new stream
upvoted 3 times
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Eason_from_the_future
3 years, 10 months ago
stream takes no parameter, so E is incorrect.
upvoted 1 times
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Svetleto13
4 years, 1 month ago
A and E are correct.
upvoted 2 times
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Huim
4 years, 1 month ago
Is E correct?
upvoted 1 times
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jduarte
4 years, 4 months ago
Answer is A
upvoted 3 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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