1Z0-811 Enhanced for loop Practice Question
Which TWO are best practices for using control flow statements? (Choose two.)
⚠ Common exam trap
Candidates often confuse the enhanced for loop with traditional for loops and may think B (break) is not a best practice. Note that while break can be overused, it is considered a best practice when used for early exit under a specific condition.
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
✓
Use the enhanced for loop instead of the traditional for loop when iterating over arrays.
Options A and B are correct. A is correct because the enhanced for loop (for-each) is less error-prone and more readable when iterating over arrays or collections. B is correct because break statements can improve efficiency by allowing early exit from a loop when a condition is met, avoiding unnecessary iterations. C is wrong because deeply nested if-else blocks harm readability and maintainability; alternatives like switch or early returns are preferred. D is wrong because switch statements are often more readable and efficient than long else-if chains for multi-way branches based on a single value. E is wrong because Java does not support goto statements; its control flow uses structured constructs like break/continue with labels.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use the enhanced for loop instead of the traditional for loop when iterating over arrays.
Why this is correct
Reduces indexing errors.
- ✓
Use break statements in loops to exit early when a condition is met.
Why this is correct
Improves performance and clarity.
- ✗
Use deeply nested if-else blocks to handle all possible conditions.
Why it's wrong here
Deep nesting harms readability.
- ✗
Prefer multiple else-if chains over switch statements for multi-way branches.
Why it's wrong here
Switch is often clearer for many cases.
- ✗
Use a goto statement to jump out of nested loops.
Why it's wrong here
Java does not have goto.
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