Java Switch Expression Result Analysis
Short answer
D The switch expression returns the value of the matched case without fall-through, resulting in 'Range1'.
Question
Key Takeaways
It tests the understanding that switch expressions automatically return the value of the matched case, eliminating the need for break statements to prevent fall-through.
This question tests the behavior of Java switch expressions and pattern matching. The code snippet demonstrates how a switch expression evaluates a string against case labels without requiring explicit break statements.
Common mistake: Learners often choose options implying fall-through or compilation errors, mistakenly applying traditional switch statement rules where break is mandatory to prevent execution from continuing to the next case.
Expert Analysis
Why the Answer Is Correct
The correct answer is D because the code uses a switch expression (indicated by the arrow syntax -> and the lack of break). In Java switch expressions, the matched case's value is returned immediately. There is no fall-through between cases. Therefore, if the input matches 'Range1', the result is simply 'Range1'.
Why the Other Options Are Wrong
Options A, B, and C likely imply some form of fall-through behavior or additional output, which is incorrect for switch expressions. Unlike traditional switch statements, switch expressions do not require break statements, and they do not fall through to subsequent cases. Any option suggesting multiple outputs or side effects beyond the single matched case is wrong.
Community Comment Notes
Community members consistently confirm D as the correct answer. One user noted that the new syntax does not require a break statement. Another emphasized that the switch expression has no fall-through behavior, contrasting it with traditional switches.
Exam Strategy
When seeing switch expressions with arrows (->), remember they are designed to replace the verbose switch statement with breaks. Always look for the return value of the specific matched case. Do not assume fall-through unless explicitly using the colon (:) syntax in a switch statement context, which this question does not appear to use based on the community consensus.
Frequently Asked Questions
Why doesn't the switch fall through to other cases?
->) syntax and automatically terminate after the first match, unlike switch statements which require break to prevent fall-through.Is a break statement needed in switch expressions?
Community Votes
100% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 3 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 3
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zuluitai 👍 1new syntax of the switch does not require a break statement hence answer is D
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SrinivasJasti 👍 1 Answered D-> has no fallthrough while : has fallthrough
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xplorerpj 👍 1D is correct answer
Reader comments & corrections
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