Question
When should a Java developer choose Dynamic Arrays and Resizing deliberately?
- Use a dynamic-array design such as ArrayList when the collection size changes over time but random access still matters.
- Choose Dynamic Arrays and Resizing mainly when you want to postpone validation and fix problems manually later.
- Choose Dynamic Arrays and Resizing whenever you want the code to look more advanced, even if the design gets less clear.
- Choose Dynamic Arrays and Resizing 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: A. Use a dynamic-array design such as ArrayList when the collection size changes over time but random access still matters.
Use a dynamic-array design such as ArrayList when the collection size changes over time but random access still matters. Interviewers often ask this to see whether you can connect the concept to real design decisions.
Track: Java