Question
When should a Java developer choose TreeMap and NavigableMap deliberately?
- Choose TreeMap and NavigableMap mainly when you want to postpone validation and fix problems manually later.
- Choose TreeMap and NavigableMap whenever you want the code to look more advanced, even if the design gets less clear.
- Use TreeMap when the feature needs sorted iteration, nearest-key lookup, or range queries rather than just direct access.
- Choose TreeMap and NavigableMap 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: C. Use TreeMap when the feature needs sorted iteration, nearest-key lookup, or range queries rather than just direct access.
Use TreeMap when the feature needs sorted iteration, nearest-key lookup, or range queries rather than just direct access. Interviewers often ask this to see whether you can connect the concept to real design decisions.
Track: Java