Question 163 of 513
1Z0-829 Working with Streams and Lambda Expressions Practice Question
What does the following code print?
List<Integer> list = List.of(1, 2, 3, 4, 5); list.stream().filter(i -> i % 2 == 0).forEach(System.out::print);
⚠ Common exam trap
A common mix-up: candidates confuse the filter predicate (i % 2 == 0) with selecting odd numbers, or they forget that filter retains matching elements rather than removing them, leading to selection of option C or B.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
24
The stream filters only even numbers (i % 2 == 0) from the list, producing 2 and 4, which are then printed sequentially via forEach. The filter operation retains elements where the predicate is true, so only 2 and 4 satisfy the condition.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
No output
Why it's wrong here
There are even numbers.
- ✗
12345
Why it's wrong here
No filter applied.
- ✗
135
Why it's wrong here
Filter for odd numbers.
- ✓
24
Why this is correct
Correct.
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Last reviewed: Jun 11, 2026
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