1Z0-811 Object-Oriented Programming Practice Question
A banking application has a base class 'Account' with a method 'withdraw()' marked as final. A subclass 'SavingsAccount' tries to override 'withdraw()'. What is the outcome?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Compilation error because final methods cannot be overridden
A final method cannot be overridden in a subclass. Attempting to do so results in a compilation error.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Compilation error because final methods cannot be overridden
Why this is correct
Correct. final methods cannot be overridden; attempting to do so causes a compile-time error.
- ✗
The override works only if SavingsAccount is in the same package
Why it's wrong here
Package does not affect the final modifier; final methods cannot be overridden regardless of package.
- ✗
The override succeeds, final is ignored in subclasses
Why it's wrong here
The final keyword explicitly prevents overriding.
- ✗
Runtime error when the method is called
Why it's wrong here
The error occurs at compile time, not runtime.
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