Question 12 of 481
1Z0-811 Control Flow and Loops Practice Question
A program needs to read user input until 'quit' is entered. Which loop ensures that the condition is evaluated after executing the body at least once?
⚠ Common exam trap
Oracle often tests the distinction between pre-test and post-test loops, and the trap here is that candidates confuse the while loop (which may execute zero times) with the do-while loop (which always executes at least once), especially when the problem explicitly requires the body to run before the condition check.
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
✓
do-while loop
The do-while loop is the only loop construct in Java that guarantees the loop body executes at least once before the condition is evaluated. This is because the condition is checked after the body runs, making it ideal for scenarios like reading user input until a sentinel value like 'quit' is entered, where the first input must be processed before checking.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
enhanced for loop
Why it's wrong here
Enhanced for is for iterating over arrays or collections.
- ✗
for loop
Why it's wrong here
For loop may not execute if condition initially false.
- ✗
while loop
Why it's wrong here
While loop checks condition before body execution.
- ✓
do-while loop
Why this is correct
Do-while always executes body at least once before checking condition.
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Last reviewed: Jun 30, 2026
This 1Z0-811 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-811 exam.
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