Question
When should a Java developer choose equals() vs == deliberately?
- Choose equals() vs == mainly when you want to postpone validation and fix problems manually later.
- Use equals when business logic depends on state equality rather than whether two references point to the exact same object.
- Choose equals() vs == whenever you want the code to look more advanced, even if the design gets less clear.
- Choose equals() vs == 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 equals when business logic depends on state equality rather than whether two references point to the exact same object.
Use equals when business logic depends on state equality rather than whether two references point to the exact same object. Interviewers often ask this to see whether you can connect the concept to real design decisions.
Track: Java