Question
When should a Java developer choose HashSet vs TreeSet deliberately?
- Choose HashSet vs TreeSet mainly when you want to postpone validation and fix problems manually later.
- Use TreeSet only when sorted iteration or ordered navigation actually matters to the feature.
- Choose HashSet vs TreeSet whenever you want the code to look more advanced, even if the design gets less clear.
- Choose HashSet vs TreeSet only to avoid modeling domain rules explicitly in Java code.
Hint
Think about the production scenario where the choice genuinely improves the code.
Answer and rationale
Correct answer: B. Use TreeSet only when sorted iteration or ordered navigation actually matters to the feature.
Use TreeSet only when sorted iteration or ordered navigation actually matters to the feature. Interviewers often ask this to see whether you can connect the concept to real design decisions.
Track: Java